Hello everyone, I'm Dr. Sven string. 00:00:36.46\00:00:38.57 It has been great going on this Evolution Impossible journey 00:00:38.67\00:00:41.94 together, where we're leaving no stone unturned 00:00:41.97\00:00:44.91 to find out whether Darwin's theory of evolution 00:00:45.01\00:00:47.38 could actually work. 00:00:47.41\00:00:48.74 I'm delighted to be able to welcome back, Justin Torossian. 00:00:48.78\00:00:51.25 Good to have you here. 00:00:51.28\00:00:52.61 And we're very privileged to have Melvin Sandelin, 00:00:52.65\00:00:55.92 who has a Swedish-Dutch background. 00:00:56.12\00:00:58.15 Now, Melvin, I reckon if we go back far enough, 00:00:58.19\00:01:00.76 we could find a Swedish common ancestor. 00:01:00.79\00:01:03.56 And also we have Jeandré Roux who is a pilot. 00:01:03.96\00:01:06.59 Glad you could drop by. 00:01:06.63\00:01:08.00 And always here to give us good answers for our 00:01:08.43\00:01:11.00 questions is Dr. John Ashton. 00:01:11.03\00:01:12.80 Thanks for being here. 00:01:12.83\00:01:14.17 You know, figuring out the age of something in nature 00:01:15.27\00:01:17.51 is not always an easy task. 00:01:17.54\00:01:19.57 However, there is one dating method that scientists tell us 00:01:19.61\00:01:23.41 is really simple and very reliable. 00:01:23.45\00:01:26.48 And that is radiometric dating. 00:01:26.51\00:01:29.05 It's like reading the time off clocks in the rocks. 00:01:29.08\00:01:32.15 But does radiometric dating really tell us 00:01:32.49\00:01:35.66 the true age of the rocks? 00:01:35.69\00:01:37.26 That's what we are exploring today. 00:01:37.29\00:01:38.93 Now, guys, I just want to ask you, how do you 00:01:38.96\00:01:42.30 understand radiometric dating to actually work? 00:01:42.33\00:01:46.03 I'll let you guys handle that. 00:01:46.90\00:01:48.24 You go ahead. 00:01:48.27\00:01:49.60 Well, I'm a bit, like, scared to say anything, 00:01:49.64\00:01:51.84 since in your introduction you said scientists 00:01:51.87\00:01:53.94 say it's really simple. 00:01:53.98\00:01:55.31 But when I read about it, I'm a bit confused. 00:01:55.51\00:01:58.08 It has something to do with the decay, 00:01:58.11\00:02:00.48 measuring certain decay in rocks, and then dating the age. 00:02:00.58\00:02:04.32 And I would need some more explanation on that actually. 00:02:04.35\00:02:07.32 ~ Excellent. John, good to have you here. 00:02:07.36\00:02:09.16 Can you fill in some of the details about how 00:02:09.36\00:02:11.89 radiometric dating actually works? 00:02:11.93\00:02:14.20 Yes, well, there are materials that we call, radioactive. 00:02:14.43\00:02:20.14 And that is, they slowly emit atomic particles of some type. 00:02:20.17\00:02:25.44 And they actually, some of them, change from one element 00:02:25.47\00:02:28.24 into another element. 00:02:28.28\00:02:29.61 So we call that, the mother element changes 00:02:29.64\00:02:31.95 into the daughter element. 00:02:31.98\00:02:34.12 ~ Gamma rays and particles? - Yes, that's right. 00:02:34.15\00:02:38.55 Neutrons; these sort of particles, 00:02:38.59\00:02:40.66 or maybe a beta particle or electron is emitted. 00:02:40.69\00:02:43.46 So what we can do is, the method involves very accurate 00:02:43.49\00:02:48.33 chemical analysis of these isotopes. 00:02:48.36\00:02:51.87 Now what an isotope is, an element is defined by 00:02:51.90\00:02:55.74 the number of protons, or positive charges in the nucleus. 00:02:55.77\00:02:59.57 But it can have different masses which are dependent 00:03:00.04\00:03:04.25 on the amount of neutrons in the nucleus. 00:03:04.28\00:03:06.41 And so, an element is defined, as I said, by the number of 00:03:06.61\00:03:09.82 protons, but when it has different number of neutrons 00:03:09.85\00:03:12.52 we call that, different isotopes. 00:03:12.55\00:03:14.62 Now when it has different numbers of neutrons 00:03:14.72\00:03:16.99 it may alter the stability. 00:03:17.03\00:03:19.19 And when it's less stable, it emits these particles 00:03:19.29\00:03:22.23 that we call radioactive. 00:03:22.26\00:03:24.03 And so, uranium is one of the classic radioactive 00:03:24.07\00:03:27.17 materials, one of the first discovered 00:03:27.20\00:03:29.10 that had these properties. 00:03:29.80\00:03:31.37 And so, what scientists do is, by very accurately using 00:03:31.57\00:03:36.51 mass spectrometers these days, they measure the amount of 00:03:36.54\00:03:41.25 one particular isotope in the rock, 00:03:41.28\00:03:44.99 the parent isotope, and then they measure the amount of 00:03:45.02\00:03:48.52 the daughter isotope. 00:03:48.56\00:03:49.89 And in the meantime, they measure the rate at which 00:03:50.03\00:03:53.16 these elements have changed. 00:03:53.36\00:03:54.83 So they've studied the radioactive material 00:03:54.86\00:03:57.27 over a period of time, and they have measured 00:03:57.53\00:03:59.63 what they call, the half-life, of the material. 00:03:59.67\00:04:03.00 Now this is a very important factor. 00:04:03.47\00:04:05.44 This is the mathematical factor that is used to 00:04:05.47\00:04:08.34 calculate the age. 00:04:08.38\00:04:10.01 And so, what it essentially is, is the time measured in years, 00:04:10.28\00:04:15.18 usually, that it takes for half of the mother element 00:04:15.22\00:04:21.02 to decay to the daughter element. 00:04:21.06\00:04:23.02 And so, if the half-life, say, was 5000 years, 00:04:23.39\00:04:27.53 then after 5000 years half of the radioactive material 00:04:27.80\00:04:31.90 would decay away. 00:04:31.93\00:04:33.57 After another 5000 years another half of what remains 00:04:33.87\00:04:38.04 has decayed away. 00:04:38.07\00:04:39.41 So we now only have a quarter of that material. 00:04:39.44\00:04:41.31 So again, from chemical analysis and mathematical 00:04:41.64\00:04:44.31 equations we can calculate on that basis. 00:04:44.35\00:04:47.88 Assuming that radiometric decay rates haven't changed, 00:04:47.92\00:04:52.39 assuming that there is no leaching out of 00:04:52.42\00:04:55.69 or removal of the mother parent element 00:04:55.72\00:04:59.26 or the daughter element by some other means, 00:04:59.29\00:05:01.90 it's only radiometric decay, then we can calculate 00:05:01.93\00:05:06.33 the age of that particular rock that it's found in. 00:05:06.37\00:05:10.11 So you're counting the parent, the mother isotope, 00:05:10.61\00:05:15.28 you're counting the daughter, 00:05:15.31\00:05:16.64 then you're putting it on the curve, 00:05:16.68\00:05:18.05 and out comes the date for the rock. 00:05:18.08\00:05:19.91 Yes, that's right. 00:05:19.95\00:05:21.28 There's a mathematical formula in there, yes. 00:05:21.32\00:05:22.98 Fantastic. 00:05:23.02\00:05:24.35 Any questions on that process? 00:05:24.39\00:05:25.72 Yeah, I was just wondering, like you mentioned, 00:05:25.75\00:05:27.69 a time of, for example, like 5000 years. 00:05:27.72\00:05:30.39 In your book, you describe certain other numbers that 00:05:30.43\00:05:32.79 can span billions of years for half-life reactions. 00:05:32.83\00:05:36.33 How do they come up with the times? 00:05:36.60\00:05:39.73 Like, how can you measure that it's 00:05:39.77\00:05:41.20 5000 years, yeah, of the half-life? 00:05:41.24\00:05:43.54 How can you know that? 00:05:43.94\00:05:45.27 ~ Well, I'm not an expert on atomic clocks, 00:05:45.31\00:05:48.58 but I understand that with these atomic clocks 00:05:48.61\00:05:51.85 that they can measure those particular half-lifes. 00:05:51.88\00:05:54.75 But that's an area I have to actually explore the rate 00:05:54.78\00:05:57.79 at which they, or the actual laboratory method of 00:05:57.82\00:06:01.29 measuring those half-lifes. 00:06:01.32\00:06:02.99 But I have read the papers where they have noted that 00:06:03.32\00:06:06.96 half-lifes can change, for example. 00:06:07.00\00:06:09.53 So under very high temperatures 00:06:09.73\00:06:11.97 they measure different half-lifes. 00:06:12.00\00:06:13.74 And also they measure different half-lifes 00:06:13.77\00:06:16.47 that appears in association with different sunspot cycles, 00:06:16.50\00:06:20.71 and this sort of thing, which is very interesting. 00:06:20.74\00:06:23.81 And there's also the theory that you can produce 00:06:23.85\00:06:27.48 accelerated nuclear decay. 00:06:27.52\00:06:30.15 But anyway, that's a good point. 00:06:30.85\00:06:32.69 I need to read up on the actual methodology that they use. 00:06:32.72\00:06:36.89 But we do have very accurate atomic clocks. 00:06:37.06\00:06:39.63 In the olden day they use to measure radiometric decay 00:06:39.66\00:06:42.66 rates using Geiger counters, 00:06:42.70\00:06:44.67 which actually counted the number of particles. 00:06:44.90\00:06:48.64 And so, I guess by integrating, if we count the number of 00:06:48.74\00:06:52.27 particles over now very accurately, 00:06:52.31\00:06:54.84 and there are lots of particles involved, 00:06:55.91\00:06:57.81 then we could actually calculate billions of years ages. 00:06:57.85\00:07:00.98 I'm sure it's just a physical calculation problem. 00:07:01.02\00:07:04.22 But I haven't actually entered into that. 00:07:04.29\00:07:05.99 ~ So it's fairly accurate, but it's really dependent on 00:07:06.76\00:07:10.23 what kind of external circumstances could have 00:07:10.26\00:07:12.39 influenced this half-life reaction over time. 00:07:12.43\00:07:15.40 ~ Yes, I imagine that the measurements of the 00:07:15.43\00:07:18.30 rate of decay are actually quite accurate 00:07:18.33\00:07:19.97 because they're done in a controlled laboratory 00:07:20.00\00:07:21.87 situation and we've got quite accurate machines now. 00:07:21.90\00:07:24.41 What we can't control, of course, is the environment 00:07:24.51\00:07:27.51 that those rocks are in. 00:07:27.61\00:07:28.94 They're out in nature. 00:07:28.98\00:07:30.61 And also we can't control and we don't necessarily know 00:07:30.71\00:07:33.92 what the conditions were in the past. 00:07:33.95\00:07:35.58 And that's one of the big downfalls of radiometric dating, 00:07:35.62\00:07:40.16 in that we have to assume that none of the daughter 00:07:40.19\00:07:44.39 element has leached away, or that more of the daughter 00:07:44.43\00:07:47.90 element has leached in, for example, also, you know. 00:07:47.93\00:07:50.63 And the same with the mother. 00:07:50.67\00:07:52.00 So these are physical processes. 00:07:52.03\00:07:53.74 You have elements in rocks, you know; 00:07:53.77\00:07:55.54 there's water and other fluids can be leaking through. 00:07:55.57\00:07:59.67 So yes, there's a lot of issues. 00:08:00.68\00:08:02.11 ~ The same thing with what we talked about 00:08:02.24\00:08:03.71 last time with the sedimentary rates and the erosion rates. 00:08:03.75\00:08:07.78 We don't know what happened in the past. 00:08:07.82\00:08:09.78 ~ Yes, yes. 00:08:09.82\00:08:11.15 But they're still using the same erosion rates 00:08:11.19\00:08:13.89 that they're calculating or measuring for billions of years. 00:08:13.92\00:08:17.43 ~ Yes. - Yeah. 00:08:17.46\00:08:18.79 One of the ways they try to improve the accuracy of 00:08:18.83\00:08:21.13 radiometric dating is a technique that has been used 00:08:21.16\00:08:25.07 since the last 1980's. 00:08:25.10\00:08:27.34 And that's called the isochron dating method. 00:08:27.44\00:08:29.80 So the methods for that particular form of radiometric 00:08:29.84\00:08:34.21 dating, we can only date volcanic rocks. 00:08:34.24\00:08:36.71 And the crystals in the volcanic rock often have 00:08:36.75\00:08:39.81 or sometimes have radioactive elements in them. 00:08:39.85\00:08:45.02 And there will be different minerals, crystals in the rock. 00:08:45.55\00:08:48.59 And so, those different crystals have different chemical 00:08:48.76\00:08:52.76 compositions, and so they'll be made up, 00:08:52.79\00:08:54.76 they'll have different radioactive elements in them. 00:08:54.86\00:08:57.00 So one of the things we can do in the rock is 00:08:57.03\00:08:59.10 analyze, separate out the different crystals, 00:08:59.37\00:09:02.10 and then individually analyze or date those different crystals 00:09:02.14\00:09:06.27 in the one rock, and then plot those together. 00:09:06.31\00:09:09.21 And if we get a pretty good straight line... 00:09:09.24\00:09:11.55 In other words, the data from all the different crystals 00:09:11.65\00:09:14.98 in the rock are matching up, 00:09:15.02\00:09:16.45 then that gives us fairly high confidence. 00:09:16.65\00:09:18.85 So that's the most accurate method. 00:09:18.89\00:09:20.36 That's called the isochron dating method. 00:09:20.39\00:09:22.29 Are there any assumptions underlying the isochron method 00:09:22.32\00:09:26.63 that we still need to be aware of? 00:09:26.73\00:09:28.46 Oh, well, they're the same assumptions as before. 00:09:28.56\00:09:31.63 And you can get other problems too, in that for example 00:09:32.07\00:09:35.87 how do we know there aren't mixing of much older rocks 00:09:36.07\00:09:39.81 with younger rocks during the molten time, 00:09:39.84\00:09:43.38 and this sort of thing? 00:09:43.41\00:09:44.75 I mean, it is fraught with a whole lot of assumptions. 00:09:44.78\00:09:47.62 And this is what people I think just generally don't realize. 00:09:47.65\00:09:51.09 You know, okay, we've got this result and we've got this 00:09:51.12\00:09:55.36 measurement; and people automatically assume 00:09:55.39\00:09:58.19 that it's correct. 00:09:58.23\00:09:59.86 One of the classic things that I like to point out is that 00:10:00.36\00:10:03.30 radiometric dating methods have never been validated 00:10:03.33\00:10:09.50 for pre-historical dates. 00:10:09.54\00:10:11.47 We haven't actually been able to validate the method, 00:10:12.17\00:10:15.74 that the method is actually working. 00:10:15.78\00:10:17.68 And this blows people's minds away. 00:10:17.88\00:10:20.15 I've actually written and pointed this out to 00:10:20.18\00:10:22.75 sort of fellow scientists. 00:10:22.78\00:10:24.32 Because a lot of people think, "Okay, we get this result 00:10:24.52\00:10:27.39 from a laboratory; it must be true." 00:10:27.42\00:10:31.33 Well in reality, chemical analysis 00:10:31.56\00:10:33.70 is very different from that. 00:10:33.73\00:10:35.06 You know, I can remember seeing the results from 00:10:35.10\00:10:38.33 government laboratory trials, 00:10:38.70\00:10:41.60 sorry, government trials of laboratories 00:10:41.70\00:10:44.31 where we were testing the accuracy of laboratories 00:10:44.34\00:10:46.91 and where samples had to be analyzed by 00:10:47.21\00:10:51.81 the leading analytical laboratories. 00:10:51.91\00:10:53.75 And the results were widely spread. 00:10:53.78\00:10:56.38 And the sample was actually a known sample. 00:10:56.58\00:10:59.79 And I think, I can't remember how many labs were involved, 00:10:59.82\00:11:02.72 but there were dozens of laboratories involved. 00:11:02.76\00:11:04.99 And I think there were only two or three out of those 00:11:05.19\00:11:07.46 laboratories that got the actual accurate answer. 00:11:07.50\00:11:10.27 So this is something we need to measure. 00:11:10.57\00:11:12.27 There's two things: there's the performance of the laboratory, 00:11:12.30\00:11:15.17 but there is also the method itself. 00:11:15.34\00:11:19.01 And one of the things is that the radiometric dating 00:11:19.21\00:11:21.84 method hasn't been validated. 00:11:21.88\00:11:24.45 ~ When you say, "pre-historic ages," 00:11:24.48\00:11:26.95 so that's going back for millions and billions of years. 00:11:26.98\00:11:29.48 But what about, I mean, science has been very active 00:11:29.52\00:11:32.32 over the last 200 years, so what about validating 00:11:32.35\00:11:36.89 radiometric dating over that period? 00:11:36.93\00:11:38.99 How has that worked? 00:11:39.03\00:11:40.50 Oh yes, okay, so this really highlights the problems 00:11:40.53\00:11:44.23 with radiometric dating. 00:11:44.27\00:11:45.77 Or one of the issues. 00:11:46.77\00:11:48.90 And perhaps what I should highlight before 00:11:48.94\00:11:52.67 I answer that is that typically when we date rocks, 00:11:53.17\00:11:58.11 there are a number of different radiometric dating 00:11:58.71\00:12:01.18 methods we use. 00:12:01.22\00:12:02.55 We might use samarium-neodymium, 00:12:02.58\00:12:04.79 or potassium-argon, or rubidium-strontium. 00:12:05.72\00:12:09.89 - We'll have a quiz on those names later. 00:12:10.36\00:12:12.36 And what often happens is, depending on the method 00:12:14.76\00:12:19.13 that we use, which are all valid radiometric dating methods, 00:12:19.17\00:12:22.60 we'll get widely different answers for the same rock. 00:12:22.70\00:12:25.47 ~ That's very unusual. - That is. 00:12:26.01\00:12:27.54 So what generally happens is, you have an age for a rock 00:12:27.58\00:12:31.55 that is based on the fossil record ages 00:12:31.58\00:12:34.68 that were based on estimates of sedimentation rates 00:12:34.72\00:12:40.56 and the thicknesses of those layers 00:12:40.59\00:12:43.02 in which the fossils were at. 00:12:43.06\00:12:44.39 The physical thicknesses. 00:12:44.43\00:12:45.76 And so, they estimated the ages. 00:12:46.03\00:12:48.43 And so, this gives us what was known as 00:12:48.46\00:12:50.87 the standard fossil age. 00:12:50.90\00:12:53.03 And that's the age that you'll find in the textbook. 00:12:53.07\00:12:55.60 Now if you find a rock that is associated with layers 00:12:55.80\00:12:59.57 above or below the fossils that we're finding, 00:12:59.61\00:13:02.41 that are listed there in the textbooks, 00:13:03.01\00:13:05.61 and it might be, say, 200 million years. 00:13:05.65\00:13:08.52 And then when you start dating it, one method 00:13:09.35\00:13:11.62 might give you 130 million years, 00:13:11.65\00:13:13.69 another method might give you 250 million years, 00:13:13.72\00:13:16.39 another method might give you 700 million years, 00:13:16.59\00:13:18.89 another method might give you a billion years. 00:13:18.93\00:13:21.33 ~ It's sort of pick your age. 00:13:21.43\00:13:23.00 Well, what happens is, when you're writing up your thesis, 00:13:23.03\00:13:26.27 you say, "Well, I've got all these values there. 00:13:26.30\00:13:28.74 250 million years is closest to the fossil age of 00:13:29.14\00:13:33.41 200 or 220 million years. 00:13:33.51\00:13:35.58 I'm going to put that in." 00:13:35.61\00:13:36.95 So you record that result. 00:13:37.08\00:13:38.78 And what is happening... 00:13:38.88\00:13:40.22 But why aren't the other results considered? 00:13:40.25\00:13:42.22 Why aren't the results that gave you a billion years, you know? 00:13:42.25\00:13:45.12 Usually uranium-lead values will give you billions of years 00:13:45.15\00:13:50.83 for most rocks. 00:13:50.93\00:13:52.26 And this is one of the problems. 00:13:52.29\00:13:54.70 Now the other thing is, and this has been done 00:13:54.73\00:13:58.53 a number of times, when we radiometrically date rocks 00:13:58.57\00:14:03.30 that we know the actual age from: 00:14:03.34\00:14:05.37 so it's a volcanic eruption that occurred maybe 200 years ago, 00:14:05.41\00:14:08.71 people have observed it, they go and chip out the lava, 00:14:08.74\00:14:11.51 and take the sample to the lab, 00:14:11.55\00:14:13.42 these always come back as being dated 00:14:14.55\00:14:17.79 hundreds of thousands to millions of years old. 00:14:17.99\00:14:21.16 Even though we know the rock was 200 years old. 00:14:21.19\00:14:24.16 And that's the question that I had. 00:14:24.26\00:14:25.79 When different methods are being used, 00:14:25.83\00:14:29.90 with all those names that you pronounced that I won't try, 00:14:29.93\00:14:32.50 but they give these different answers. 00:14:33.30\00:14:36.27 Like really different answers. 00:14:36.30\00:14:38.01 But they use the same principle it is dating 00:14:38.34\00:14:40.91 that half-life time reaction. 00:14:40.94\00:14:42.51 ~ That's right. - And if that is fairly accurate 00:14:42.54\00:14:45.11 in itself, but the answers are so, they can differ 00:14:45.15\00:14:49.55 billions of years, where does that difference come from? 00:14:49.58\00:14:53.19 ~ Well I'm not sure, but I think one of the things is that 00:14:54.16\00:14:57.53 when you look at the half-lifes of a lot of those systems 00:14:57.56\00:14:59.79 that are used, those half-lifes are billions of years. 00:14:59.83\00:15:02.50 And so, it seems to me very reasonable that you're going to 00:15:03.00\00:15:07.27 get hundreds of millions of years as your answers. 00:15:07.30\00:15:09.84 And I think the classic example of this was work 00:15:10.21\00:15:12.77 that was done here in Australia where samples were taken 00:15:12.81\00:15:18.55 from the eruptions from Mt. Ngauruhoe in New Zealand, 00:15:18.58\00:15:21.98 and it erupted in the late 1940's early 1950's. 00:15:22.02\00:15:25.25 And when those samples were analyzed 00:15:25.65\00:15:28.26 at one of the geoscience laboratories at 00:15:28.29\00:15:33.29 the Australian National University 00:15:33.33\00:15:35.16 here in Australia, the samples gave ages, from memory, 00:15:35.73\00:15:40.34 ranging from about 130 million years, 00:15:40.37\00:15:43.81 300 million years, and I think 350,000 million years 00:15:43.91\00:15:49.81 for rocks that we knew were 50 years old. 00:15:50.11\00:15:52.88 Well the analysis were done in the late 1990's to early 2000's. 00:15:52.91\00:15:56.38 So at that stage the rocks were only 50 years old. 00:15:56.42\00:15:59.75 And yet, they all gave more than 100 million years 00:16:00.29\00:16:04.29 via different methods by one of the best 00:16:04.33\00:16:07.53 radiometric dating laboratories in Australia. 00:16:08.26\00:16:11.13 ~ What about the idea that the rocks might be 50 years old, 00:16:11.33\00:16:16.54 but the chemical composition, 00:16:16.81\00:16:18.84 the material might have been very old? 00:16:18.87\00:16:23.51 Would that play into this calculation at all? 00:16:24.55\00:16:27.72 Well it could, but what it means is that it's useless 00:16:28.55\00:16:32.79 in dating any rock, isn't it. 00:16:32.82\00:16:34.46 If rocks that are only 50 years old date as 00:16:34.59\00:16:36.73 millions of years old, and you pick up another rock 00:16:36.76\00:16:39.13 sample and you get some millions, how old is it? 00:16:39.16\00:16:41.56 Is it millions of years old or is it 50 years old? 00:16:41.60\00:16:44.50 And the thing is, that isn't just an isolated example. 00:16:44.53\00:16:47.87 If you go to the standard, you know, some of the standard 00:16:47.90\00:16:52.27 radiometric dating textbooks, they site these examples 00:16:52.37\00:16:55.28 where Hawaiian lava flows were being dated, and so forth. 00:16:55.31\00:16:59.11 And again, the sad explanation is, "Well, somehow there was 00:16:59.31\00:17:03.55 some sampling errors, or somehow there was sort of some mixing." 00:17:03.59\00:17:07.29 You know, the magma or something like that. 00:17:07.72\00:17:11.66 But what the ratios were that God originally created, 00:17:11.93\00:17:15.83 you know, we don't know. 00:17:16.73\00:17:18.07 Really, it doesn't matter. 00:17:18.10\00:17:20.24 When we compare that with erosion rates 00:17:20.27\00:17:22.50 and all these other factors we can see, it virtually 00:17:22.54\00:17:25.77 wipes out radiometric dating. 00:17:25.81\00:17:27.68 Now one of the things that often happens in, you know, 00:17:27.71\00:17:30.85 the general popular thinking, if I can put it that way, 00:17:30.88\00:17:33.15 is that as soon as you hear, radiometric dating, 00:17:33.52\00:17:35.72 you think, carbon-14 dating. 00:17:35.75\00:17:37.69 But they're actually, they are the same class of dating 00:17:38.49\00:17:42.62 method, but they're quite different. 00:17:42.66\00:17:43.99 And there are some misunderstandings 00:17:44.03\00:17:45.63 about carbon-14 dating. 00:17:45.66\00:17:47.00 Can you just enlighten us on that topic? 00:17:47.03\00:17:49.53 Yes, okay, so carbon-14 dating is another dating method 00:17:49.86\00:17:53.64 that actually doesn't, it works on a different principle. 00:17:53.67\00:17:58.64 In other words, in radiometric dating we calculate the age. 00:17:58.67\00:18:01.94 But carbon-14 dating depends on so many variables 00:18:02.41\00:18:07.12 that it itself has to be calibrated 00:18:07.15\00:18:09.78 by some secondary method. 00:18:09.82\00:18:11.25 So how carbon-14 dating works is this: 00:18:11.29\00:18:13.62 That in the atmosphere, the upper atmosphere is hit by 00:18:14.16\00:18:18.56 cosmic rays coming from outer space which are charged 00:18:18.59\00:18:21.13 high-energy particles. 00:18:21.16\00:18:22.56 They collide with atoms up in the outer space area 00:18:22.86\00:18:27.07 and generate high-energy neutrons. 00:18:27.10\00:18:28.94 Some of those high-energy neutrons 00:18:28.97\00:18:30.94 then hit a nitrogen nucleus. 00:18:31.21\00:18:33.58 So nitrogen is one of the gases in the atmosphere there. 00:18:33.61\00:18:36.48 And it has seven protons and seven neutrons. 00:18:36.64\00:18:40.62 And what happens is, sometimes those high-energy neutrons 00:18:40.98\00:18:44.09 knock a proton out of the nucleus, leaving only 00:18:44.29\00:18:48.16 six protons, which changes that nitrogen to carbon. 00:18:48.19\00:18:52.53 It very quickly reacts with oxygen before it 00:18:53.06\00:18:55.56 becomes carbon dioxide. 00:18:55.60\00:18:57.17 But that is now carbon-14. 00:18:57.20\00:18:59.97 Normally carbon is 12. Six protons and six neutrons. 00:19:00.00\00:19:04.07 But now it's carbon-14, and it's unstable. 00:19:04.24\00:19:07.51 And it has a half-life of 5730 years. 00:19:07.54\00:19:11.05 And so, after 5000 years we only have half the level. 00:19:11.38\00:19:15.75 Or five and a half thousand years. 00:19:15.78\00:19:18.15 After 11,000 and a bit years, 00:19:18.19\00:19:20.12 we'll have only a quarter of the level. 00:19:20.16\00:19:21.69 After 15,000 years, we'll only have an eighth of the level. 00:19:21.72\00:19:25.13 So by measuring the amount of carbon-14 00:19:25.16\00:19:27.93 that we have, we can back calculate the age of things. 00:19:28.30\00:19:31.57 Now carbon-14 is very good for dating the actual fossils 00:19:31.60\00:19:35.04 because they have carbon in them. 00:19:35.07\00:19:36.87 So we can date the actual fossils that way. 00:19:37.07\00:19:39.97 But the thing is we measure... 00:19:40.28\00:19:45.01 Back in 1950 they standardized the level of carbon-14 00:19:45.05\00:19:48.75 in the atmosphere. 00:19:48.78\00:19:50.12 Well since then it's been changing. 00:19:50.15\00:19:51.49 We've had a lot more carbon dioxide come up; 00:19:51.52\00:19:53.56 by the way, which is diluting it. 00:19:53.59\00:19:55.06 The other thing is that the earth's magnetic field 00:19:55.32\00:19:59.33 repels a lot of the cosmic rays. 00:19:59.36\00:20:02.33 And so, the amount of carbon-14 that is present 00:20:02.96\00:20:06.84 in the atmosphere depends on that carbon-14 flux anyway. 00:20:06.87\00:20:10.94 In the past, we know the earth's magnetic field has 00:20:11.27\00:20:13.68 been decaying; it's decayed about 10% in the last 150 years. 00:20:13.71\00:20:18.41 6.5% since 1900, for example. 00:20:18.45\00:20:21.25 So in the past, a stronger magnetic field would have 00:20:21.45\00:20:26.15 repelled more cosmic rays, which means lower levels of 00:20:26.19\00:20:29.49 carbon-14, which gives us artificially longer ages 00:20:29.52\00:20:34.56 if we base it on the current level, which is what we do. 00:20:34.66\00:20:38.60 Now how it works is that when a plant is alive 00:20:38.80\00:20:41.64 it's taking in the carbon dioxide, 00:20:41.67\00:20:43.37 and there's an equilibrium. 00:20:43.41\00:20:44.74 The same level of carbon-14 that's in the 00:20:44.84\00:20:46.88 plants is in the atmosphere. 00:20:46.91\00:20:48.24 But when it dies or when it's buried, 00:20:48.28\00:20:50.08 and the same with an animal, there's no more interchange 00:20:50.11\00:20:53.72 with carbon-14, so what is there begins to decay. 00:20:53.75\00:20:56.79 And so it will have a lower level over time. 00:20:56.99\00:20:59.65 So that's how they calculate the age. 00:20:59.69\00:21:01.96 But it's very interesting, because after about 00:21:02.22\00:21:05.69 100,000 years there would be no detectable carbon-14 left. 00:21:05.73\00:21:09.63 So if we find carbon-14 in something, 00:21:10.40\00:21:13.13 it means it's got to be quite young. 00:21:13.34\00:21:15.34 ~ Less than 100,000 years old. Interesting, interesting. 00:21:15.37\00:21:17.84 ~ And I think you mention in your book that 00:21:17.87\00:21:20.48 there were some diamonds taken from the De Beers mine 00:21:20.51\00:21:23.38 in the southern part of Africa, and that these were 00:21:23.41\00:21:26.88 carbon-14 dated, I think it was. 00:21:26.92\00:21:28.92 They're estimated to be between 1 and 3 million years old. 00:21:29.02\00:21:31.79 But like you mentioned, if they have carbon in them, 00:21:32.05\00:21:35.19 they have to be, what, less than how old was it? 00:21:35.22\00:21:37.43 - 100,000? ~ 100,000. 00:21:37.46\00:21:38.79 ~ Yes, well that's right. 00:21:38.83\00:21:40.50 And that's a very interesting example, because 00:21:40.53\00:21:42.70 diamonds were meant to have formed when the continents 00:21:42.73\00:21:44.90 formed under intense heat and pressure. 00:21:44.93\00:21:46.84 And they're meant to be 1.5 to 3 billion years old. 00:21:47.17\00:21:51.37 So they should have absolutely none. 00:21:51.41\00:21:54.34 And of course, they began finding carbon-14 in diamonds. 00:21:54.54\00:21:57.75 And this was seriously challenged. 00:21:57.78\00:21:59.31 And so, some every accurate studies were done at the 00:21:59.35\00:22:04.09 University of California, Los Angeles campus, from memory, 00:22:04.12\00:22:07.59 using one of the most accurate mass spectrometers in the world. 00:22:07.79\00:22:11.06 And sure enough, carbon-14 was there in diamonds. 00:22:11.26\00:22:13.66 And so, that is powerful evidence that the 00:22:13.70\00:22:18.23 continents can't be that old. 00:22:18.27\00:22:19.67 And now, of course, they have carbon-14 dated 00:22:19.70\00:22:22.00 dinosaur remains, and the same thing. 00:22:22.04\00:22:24.51 And sometimes they come out at around, you know, 00:22:24.61\00:22:28.11 20 or 30 thousand years. 00:22:28.14\00:22:29.84 And people say, "Well, that's still a lot older 00:22:29.94\00:22:31.98 than the Bible dates." 00:22:32.01\00:22:33.35 But that is just the straight age date. 00:22:33.38\00:22:36.35 We haven't corrected for the lower values 00:22:36.55\00:22:40.69 caused by the lower cosmic rays flux in the past. 00:22:40.72\00:22:46.09 One of the things, there are Christians in the world today 00:22:47.30\00:22:51.73 who say, "We want to believe in the Bible 00:22:51.77\00:22:54.64 because it has changed our lives. 00:22:54.67\00:22:56.47 It made such a big difference. 00:22:56.50\00:22:57.84 But also, science has been so transformative 00:22:57.87\00:23:01.04 in our society as well. 00:23:01.08\00:23:02.44 And we want to integrate those two." 00:23:02.54\00:23:04.48 And we head towards something like theistic evolution, 00:23:04.51\00:23:08.95 where God supervised or guided the process of evolution. 00:23:08.98\00:23:13.49 What's your thoughts on this concept or proposal 00:23:13.52\00:23:16.69 of theistic evolution? 00:23:16.73\00:23:18.79 Well, I guess there's two aspects. 00:23:19.06\00:23:20.46 You can have the theological aspect, that it certainly 00:23:20.50\00:23:23.00 doesn't fit with the concept of sin and death 00:23:23.03\00:23:25.53 that the Bible talks about. 00:23:25.57\00:23:26.90 But the other problem is, why are they doing that? 00:23:27.24\00:23:29.97 Why do they believe that the earth is so old? 00:23:30.01\00:23:33.48 And I think it's because they've been inculcated with 00:23:33.51\00:23:35.74 this idea from radiometric dating of the long ages. 00:23:35.78\00:23:39.48 But you're just bowing the knee to a false science then. 00:23:39.88\00:23:43.95 You know, we have so much evidence now that the earth 00:23:44.25\00:23:47.96 can't be those hundreds of millions of years ages 00:23:47.99\00:23:51.89 that the radiometric dating results give us. 00:23:52.16\00:23:55.06 We know classically from erosion rates. 00:23:55.43\00:23:58.03 We know from the soft tissue in dinosaurs. 00:23:58.23\00:24:00.30 There's so many things that are pointing to this young age. 00:24:00.34\00:24:03.67 It's the fact that we can find carbon-14 in coal, and so forth. 00:24:03.71\00:24:08.21 So to me, this whole concept of theistic evolution, 00:24:08.24\00:24:12.11 that God had to bow the knee to evolution 00:24:12.15\00:24:14.95 and produce it slowly over time, just doesn't 00:24:14.98\00:24:18.52 fit the scientific data. 00:24:18.55\00:24:19.95 Plus, why does God need to do that? 00:24:20.16\00:24:22.46 He said He spoke it into existence. 00:24:22.49\00:24:24.49 And the other problem too that we often forget 00:24:24.53\00:24:27.23 is that evolution has major problems in terms of ecology, 00:24:27.33\00:24:32.43 as we've talked about, in that you need the insects, 00:24:32.93\00:24:35.74 and the flowering plants need one another. 00:24:35.77\00:24:37.97 There's a whole lot of ecological balance. 00:24:38.14\00:24:40.48 The ecosystems, yeah. 00:24:40.51\00:24:41.84 And it doesn't follow the lines of the evolutionary, you know, 00:24:41.88\00:24:45.55 phylogenetic trees. 00:24:45.58\00:24:46.95 So they're caught out. 00:24:47.32\00:24:50.02 They're caught out with science, and they're caught out, 00:24:50.22\00:24:52.25 in my view, with theology as well. 00:24:52.29\00:24:53.89 What the Bible actually says. 00:24:53.92\00:24:55.46 Do you have any further questions on this topic 00:24:55.79\00:24:57.89 of radiometric dating and theistic evolution? 00:24:57.93\00:25:00.33 ~ What you're saying, it's just a mindset of people thinking 00:25:00.36\00:25:04.47 that it's millions of years. 00:25:04.50\00:25:05.83 Does that sort of correlate with the biblical account of creation 00:25:06.07\00:25:13.14 where they say, or the Bible says, "evening and morning 00:25:13.44\00:25:17.48 was the first day," but they claim that it was 00:25:17.58\00:25:20.22 millions of thousands of years time period that passed? 00:25:20.25\00:25:23.92 ~ Well, time is a fascinating thing, 00:25:25.55\00:25:28.59 as we have talked about just briefly. 00:25:28.62\00:25:31.16 But no, they are 24 hour earth days. 00:25:31.19\00:25:33.60 And the whole universe was created in that time. 00:25:33.76\00:25:35.96 Because if we look at Genesis 2:1, 00:25:36.00\00:25:37.83 it says, "And God was finished." 00:25:37.93\00:25:39.70 And you know, the whole host of them had been created then. 00:25:39.97\00:25:43.71 And we talk about, God spoke things into existence. 00:25:43.74\00:25:47.64 And to me, that's very reasonable. 00:25:47.94\00:25:51.21 You know, I think a classic example of this is... 00:25:51.25\00:25:54.45 Let's do an experiment live on television. 00:25:55.18\00:25:58.22 Move your little finger. 00:26:00.09\00:26:01.52 Can you move your little finger? Right, okay. 00:26:01.72\00:26:03.83 Does your brain have mass? 00:26:03.86\00:26:05.26 You can weight your brain, can't you? 00:26:06.90\00:26:08.50 ~ Yes. - Yeah. 00:26:08.53\00:26:09.86 Can you weigh your thoughts? 00:26:10.07\00:26:11.50 ~ No. 00:26:11.53\00:26:12.87 How did you move your little finger? 00:26:12.90\00:26:14.24 Your thoughts, your thoughts are non-material, 00:26:15.70\00:26:18.24 but they affected this material world. 00:26:18.27\00:26:20.51 God is Spirit, He's non-material, 00:26:21.08\00:26:23.91 why can't He just create matter and affect the universe? 00:26:24.18\00:26:28.35 If our non-material thoughts, our consciousness, 00:26:28.38\00:26:31.89 can affect electrical impulses in our brain, 00:26:31.92\00:26:34.36 and affect nerves and muscles, and through our thoughts 00:26:34.39\00:26:37.66 we can create things... 00:26:37.69\00:26:39.03 We can create a poem, we can create a mobile phone. 00:26:39.06\00:26:42.80 Surely God can create, just like that. 00:26:43.77\00:26:47.04 Speak it into existence. 00:26:47.07\00:26:48.40 It makes more scientific sense than all this evolution rubbish. 00:26:48.44\00:26:51.17 It is amazing, really amazing to think about radiometric dating 00:26:52.01\00:26:55.88 can be so wildly wrong. 00:26:55.91\00:26:57.71 And if our planet earth is not billions of years old, 00:26:58.08\00:27:01.38 but only a few thousand years, 00:27:01.42\00:27:03.59 that would mean that evolution simply does not 00:27:03.82\00:27:06.45 have enough time to occur. 00:27:06.49\00:27:08.39 So that means that evolution is impossible. 00:27:08.79\00:27:11.09 Now I realize that can be quite a confronting idea to you, 00:27:11.73\00:27:15.40 and so I encourage you to get a copy of Dr. John Ashton's book. 00:27:15.43\00:27:19.27 And work through all the lines of evidence 00:27:20.57\00:27:23.24 that he describes in the book. 00:27:23.27\00:27:25.51 If evolution really didn't happen, 00:27:25.67\00:27:28.14 could this mean that there's a God out there 00:27:28.18\00:27:30.61 who originally created this world and loves you? 00:27:30.65\00:27:34.22 Hang onto that thought as we journey back in time 00:27:34.32\00:27:36.69 in our next episode to the Big Bang itself. 00:27:36.89\00:27:39.85 And if you missed any previous programs, 00:27:40.16\00:27:42.36 you can watch them on our website. 00:27:42.39\00:27:44.13 We look forward to seeing you again back at the Big Bang. 00:27:46.90\00:27:50.63