Hi. 00:00:20.77\00:00:21.82 Clifford Goldstein here 00:00:21.85\00:00:23.12 and I want to welcome you to "Contending for the Faith." 00:00:23.15\00:00:27.09 The talk that I want to do now is called 00:00:27.12\00:00:29.26 the science of knowledge and its part of a series 00:00:29.29\00:00:33.44 I'm doing called faith and science. 00:00:33.47\00:00:36.12 And when we look at questions of science in our modern age 00:00:36.15\00:00:40.48 and how these questions relate to issues of faith. 00:00:40.51\00:00:45.53 They're quite often faith and science are in harmony. 00:00:45.56\00:00:50.40 There are times 00:00:50.43\00:00:51.68 when they are absolutely opposed to each other 00:00:51.71\00:00:55.93 that is if the science is right, 00:00:55.96\00:00:59.16 the particular issue of faith here 00:00:59.19\00:01:01.74 has to be wrong and vice versa. 00:01:01.77\00:01:06.40 Now the question then is not only which is right 00:01:06.43\00:01:10.77 but how do we know which one is right. 00:01:10.80\00:01:13.62 And how can we know that we know which one is right. 00:01:13.65\00:01:18.13 Can we really know it? Okay. 00:01:18.16\00:01:20.87 These things I admit can get rather complicated. 00:01:20.90\00:01:25.89 Nevertheless considering the importance of the issues, 00:01:25.92\00:01:29.97 it certainly well worth our time to try the best 00:01:30.00\00:01:34.41 that we can to work through them, 00:01:34.44\00:01:36.86 at least to the degree we can as human beings 00:01:36.89\00:01:40.48 with a greatly limited in our knowledge. 00:01:40.51\00:01:45.82 Now to begin, I want to look at an article 00:01:45.85\00:01:50.07 that ran in the 2013 edition in the Economist Magazine. 00:01:50.10\00:01:56.51 The Economist is a British, 00:01:56.54\00:01:58.36 is a very-- very well respected magazine, 00:01:58.39\00:02:01.97 and as you can discern by its name, 00:02:02.00\00:02:03.95 it deals with the economic things 00:02:03.98\00:02:05.63 but it deals with politics, foreign affairs, culture. 00:02:05.66\00:02:09.70 It's a very respected magazine and very, very, well done. 00:02:09.73\00:02:15.46 Anyway I was reading from an October 13, 2013 issue. 00:02:15.49\00:02:21.75 And the title of the article was 00:02:21.78\00:02:24.44 "How Science Goes Wrong." 00:02:24.47\00:02:28.17 What? 00:02:28.20\00:02:29.42 Science, how does science go wrong. 00:02:29.45\00:02:33.06 Isn't science kind of the ultimate 00:02:33.09\00:02:35.43 standard bearer of truth? 00:02:35.46\00:02:37.65 How does this go wrong? 00:02:37.68\00:02:39.73 I mean, haven't we been told all our lives 00:02:39.76\00:02:42.07 that science is wealthy way to get truth. 00:02:42.10\00:02:45.79 When something is scientific or proven by science 00:02:45.82\00:02:50.08 or comes with all the imprimatur of science. 00:02:50.11\00:02:53.24 Doesn't that sort of have all the authority 00:02:53.27\00:02:56.92 that makes it unchallengeable? 00:02:56.95\00:02:59.21 When science speaks what plea they speak out against it. 00:02:59.24\00:03:04.69 It's been for a long time 00:03:04.72\00:03:06.48 at least in contemporary society, 00:03:06.51\00:03:09.32 contemporary culture, 00:03:09.35\00:03:10.86 a sign of a lack of knowledge of sophistication 00:03:10.89\00:03:14.71 to dare to challenge the findings of science. 00:03:14.74\00:03:19.45 Well, it's fastening because recently a book 00:03:19.48\00:03:21.61 came out called "Mind and Cosmos." 00:03:21.64\00:03:25.27 Why the Materialist Neo-Darwinian 00:03:25.30\00:03:28.02 Conception of Nature Is Almost Certainly False. 00:03:28.05\00:03:33.30 The problem however was the author 00:03:33.33\00:03:35.87 was not some dumb hick Bible thumping creationist 00:03:35.90\00:03:39.55 as folks who believe in the Bible 00:03:39.58\00:03:41.60 and the biblical account of origins are often depicted. 00:03:41.63\00:03:45.13 Instead, he is one of the most 00:03:45.16\00:03:46.67 respected intellectuals alive today 00:03:46.70\00:03:50.36 and so those who took umbrage at him 00:03:50.39\00:03:53.75 are daring to challenge the greatest 00:03:53.78\00:03:56.08 and greatest science couldn't easily get off, 00:03:56.11\00:03:59.72 you know, writing off the author Thomas Nagel 00:03:59.75\00:04:02.44 as some illiterate yahoo who didn't get it. 00:04:02.47\00:04:06.06 Nagel, I've read most of his books. 00:04:06.09\00:04:08.43 He's one of smartest, 00:04:08.46\00:04:10.09 deepest thinkers writing today, okay. 00:04:10.12\00:04:13.81 So what was interesting just to see how condescending 00:04:13.84\00:04:17.61 many of the attacks were on him? 00:04:17.64\00:04:20.50 Well, this was just an example 00:04:20.53\00:04:22.54 how the poor man doesn't understand the real issues, 00:04:22.57\00:04:25.67 that kind of things. 00:04:25.70\00:04:27.11 It's out of his ignorance of the facts 00:04:27.14\00:04:29.20 that he would dare to questions 00:04:29.23\00:04:31.29 something as scientifically sound 00:04:31.32\00:04:33.76 and established as the Neo-Darwinian 00:04:33.79\00:04:36.46 Conception of how we got here. 00:04:36.49\00:04:40.46 Anyway, 00:04:40.49\00:04:41.73 I'd like to maybe some day come back to Thomas Nagel 00:04:41.76\00:04:44.60 and his challenge to a purely materialist world view 00:04:44.63\00:04:48.44 which is at the heart 00:04:48.47\00:04:49.50 of the Neo-Darwinian view of origins. 00:04:49.53\00:04:53.30 And I think the point is we have been led to believe 00:04:53.33\00:04:55.26 that science is kind of a higher form of truth 00:04:55.29\00:04:58.41 or more certain kind of truth than anything else. 00:04:58.44\00:05:01.76 And I think sometimes we can have good believing-- 00:05:01.79\00:05:04.63 reasons for believing that. 00:05:04.66\00:05:06.52 Though what's important to realize, 00:05:06.55\00:05:08.63 and this is something 00:05:08.66\00:05:09.69 that I want to comeback to one day 00:05:09.72\00:05:12.07 that you can have very good reasons, 00:05:12.10\00:05:15.18 very sound reasons 00:05:15.21\00:05:17.40 for believing in things that are wrong. 00:05:17.43\00:05:21.22 Man, I can do a whole project, the whole program on that. 00:05:21.25\00:05:24.67 Stay tuned, I think I will one day. 00:05:24.70\00:05:26.98 Anyway, the point is we have an article 00:05:27.01\00:05:30.52 in a well respected magazine 00:05:30.55\00:05:33.10 talking about how science goes wrong. 00:05:33.13\00:05:36.45 And I think it's something we need to look at. 00:05:36.48\00:05:39.58 Now the jest of the article 00:05:39.61\00:05:40.97 is not science going wrong morally. 00:05:41.00\00:05:43.54 You know, we can split the atom to make a nuclear bomb 00:05:43.57\00:05:47.49 or we can make medicine that kind of thing. 00:05:47.52\00:05:49.98 That's a whole different matter. 00:05:50.01\00:05:51.78 No, the question of the article deals with is how the practice, 00:05:51.81\00:05:56.53 the result, the methods of science 00:05:56.56\00:06:00.79 that are being done shoddily. 00:06:00.82\00:06:04.38 Let me read you a quote from the Economist. 00:06:04.41\00:06:07.51 Listen to this, they were doing some studies on science, 00:06:07.54\00:06:12.60 you know, looking at how science was done. 00:06:12.63\00:06:15.15 See, "Too many of the findings that fill the academic ether 00:06:15.18\00:06:18.96 are the result of shoddy experiments 00:06:18.99\00:06:21.22 or poor analysis. 00:06:21.25\00:06:23.08 A rule of thumb among biotechnology 00:06:23.11\00:06:26.96 venture-capitalists 00:06:26.99\00:06:28.49 is that half of the published research cannot be replicated. 00:06:28.52\00:06:32.93 And even that may be optimistic. 00:06:32.96\00:06:35.25 Last year researchers at one biotech firm, 00:06:35.28\00:06:38.62 Amgen, found they could reproduce 00:06:38.65\00:06:41.26 just 6 of 53 landmark studies in cancer research. 00:06:41.29\00:06:47.73 Earlier, a group at Bayer, 00:06:47.76\00:06:50.09 a drug company, managed to repeat 00:06:50.12\00:06:52.64 just a quarter of 67 similar important papers. 00:06:52.67\00:06:58.17 A leading computer scientist frets 00:06:58.20\00:07:01.19 that three-quarters of papers in his subfield are bunk." 00:07:01.22\00:07:06.93 I mean this to me is incredible, 00:07:06.96\00:07:09.44 at least I would seen that people 00:07:09.47\00:07:11.16 who buy the popular view of science 00:07:11.19\00:07:13.46 as well kind of an exact science 00:07:13.49\00:07:16.17 should be stunned by this, should be stunned by this. 00:07:16.20\00:07:19.24 You know, it's done by a means 00:07:19.27\00:07:21.13 that we're all told it has to be truth. 00:07:21.16\00:07:23.66 I mean, what they're saying one study after another, 00:07:23.69\00:07:26.67 they could be replicated on and on and on. 00:07:26.70\00:07:30.55 So for many people however, 00:07:30.58\00:07:32.74 if you study the philosophy and history of science, 00:07:32.77\00:07:37.84 you look at things quite differently, 00:07:37.87\00:07:40.12 I wasn't surprised at all. 00:07:40.15\00:07:42.75 Even though it was still an amazing article, 00:07:42.78\00:07:45.68 even to me who has been open to these things for a while. 00:07:45.71\00:07:49.59 Let me read you another quote. This was amazing. 00:07:49.62\00:07:52.62 That's why I'd like to be one of these people. 00:07:52.65\00:07:54.44 "In 2000-10 roughly 80,000 patients 00:07:54.47\00:08:00.77 took part in clinical trials based on research 00:08:00.80\00:08:04.94 that was later retracted 00:08:04.97\00:08:06.69 because of mistakes or improprieties." 00:08:06.72\00:08:09.46 Come on. 00:08:09.49\00:08:10.85 That's 80,000 people taking part in clinical trials 00:08:10.88\00:08:15.28 based on mistakes or improprieties. 00:08:15.31\00:08:18.28 I wonder how it made those, 00:08:18.31\00:08:19.35 some of those 80,000 guinea pigs feel. 00:08:19.38\00:08:22.65 The article went on to talk about the reasons 00:08:22.68\00:08:25.59 for many of the problems in science. 00:08:25.62\00:08:27.79 And what are they? 00:08:27.82\00:08:29.69 Okay, they're competing for scarce resources 00:08:29.72\00:08:34.32 and there is as a powerful tendency to exaggerate, 00:08:34.35\00:08:37.41 the article said that exaggeration, 00:08:37.44\00:08:39.91 they talked about exaggeration and cherry-picking of results. 00:08:39.94\00:08:44.22 In science, exaggerating, cherry-picking. 00:08:44.25\00:08:49.01 How do those ideas stood in 00:08:49.04\00:08:50.79 with the image of scientists in a lab 00:08:50.82\00:08:53.75 doing everything rationally, logically, scientifically? 00:08:53.78\00:09:00.15 Also, isn't it something that-- 00:09:00.18\00:09:03.12 isn't it something that peer review, 00:09:03.15\00:09:05.69 we've often hear the word peer review. 00:09:05.72\00:09:08.55 Well, it's peer reviewed, 00:09:08.58\00:09:10.52 well, therefore don't question it. 00:09:10.55\00:09:13.12 It's peer reviewed. 00:09:13.15\00:09:14.19 Well, I mean, that what more do you need. 00:09:14.22\00:09:16.15 Well, look at what this says. Listen to this quote. 00:09:16.18\00:09:19.63 Okay, quote, this is again from The Economist. 00:09:19.66\00:09:22.76 "The hallowed process of peer review 00:09:22.79\00:09:25.36 is not all it is cracked up to be, either. 00:09:25.39\00:09:28.43 When a prominent..." 00:09:28.46\00:09:29.49 Listen to me this, this is amazing. 00:09:29.52\00:09:31.28 "When a prominent medical journal 00:09:31.31\00:09:33.26 ran research past other experts in the field, 00:09:33.29\00:09:36.87 it found that most of the reviewers 00:09:36.90\00:09:38.98 failed to spot mistakes 00:09:39.01\00:09:41.29 it had deliberately inserted into the papers, 00:09:41.32\00:09:45.21 even after being told they were being tested." 00:09:45.24\00:09:48.65 Can you believe this? 00:09:48.68\00:09:50.07 They purposely put mistakes in and they missed it completely. 00:09:50.10\00:09:54.75 This is peer review. 00:09:54.78\00:09:56.38 Oh, my goodness, I could spend an awful 00:09:56.41\00:09:58.36 lot of time on this today if I wanted to, 00:09:58.39\00:10:01.22 but I got different fish to fry today. 00:10:01.25\00:10:04.04 Anyway, I'm bringing all this up. 00:10:04.07\00:10:06.72 It's not to dirt science but it's to point out something 00:10:06.75\00:10:10.76 that people tend to forget. 00:10:10.79\00:10:13.79 Okay, and they tend to forget that in most cases 00:10:13.82\00:10:17.75 scientists stick to study the world out there 00:10:17.78\00:10:21.42 objective reality, the things in itself, 00:10:21.45\00:10:24.74 stars and rocks and birds and all that. 00:10:24.77\00:10:28.48 Who is doing the studying, okay? 00:10:28.51\00:10:33.16 Of course it's human beings, 00:10:33.19\00:10:37.55 fallible, bigoted, subjective human beings. 00:10:37.58\00:10:42.51 Science like art and like sports 00:10:42.54\00:10:45.57 and like bridge building 00:10:45.60\00:10:47.03 and computer programming and music is a human process. 00:10:47.06\00:10:51.06 It's something that humans do. 00:10:51.09\00:10:53.59 And thus it comes with all the inevitable 00:10:53.62\00:10:56.09 and inbuilt problems 00:10:56.12\00:10:58.23 that humans by the very nature of how we construct 00:10:58.26\00:11:01.73 or constructed bring to whatever we do. 00:11:01.76\00:11:05.22 And that includes our scientific study 00:11:05.25\00:11:08.30 of objective reality. 00:11:08.33\00:11:11.55 You know, if you ever study the philosophy of science. 00:11:11.58\00:11:16.36 This truth about the limits 00:11:16.39\00:11:17.89 of what humans can do comes home quickly. 00:11:17.92\00:11:21.50 Now some might ask what is the philosophy of science? 00:11:21.53\00:11:25.32 You know, we tend to think of them as the opposite, 00:11:25.35\00:11:27.75 you know, philosophy is this kind of other worldly musings 00:11:27.78\00:11:32.04 about metaphysics and first principles, 00:11:32.07\00:11:34.96 while science is kind of this nitty-gritty 00:11:34.99\00:11:37.92 getting your fingers and hands dirty 00:11:37.95\00:11:40.17 study of reality. 00:11:40.20\00:11:42.05 Well, I suppose there is some truth to this, 00:11:42.08\00:11:45.65 but it's very small almost to the point 00:11:45.68\00:11:48.02 of being meaningless. 00:11:48.05\00:11:49.78 The fact is that science, 00:11:49.81\00:11:52.05 yes, science proceeds on philosophical assumptions. 00:11:52.08\00:11:58.10 You can't separate science from philosophy. 00:11:58.13\00:12:02.27 Indeed, in a sense science is a form of philosophy. 00:12:02.30\00:12:09.17 Now I read a lot of philosophy of science 00:12:09.20\00:12:13.12 and I'm reading these books. 00:12:13.15\00:12:14.88 And then one day it suddenly hit me 00:12:14.91\00:12:17.52 as I'm reading these books. 00:12:17.55\00:12:19.42 It suddenly hit me that really all I'm reading 00:12:19.45\00:12:22.52 is I'm studying epistemology. 00:12:22.55\00:12:26.72 Now that's a fancy world. 00:12:26.75\00:12:28.50 What is epistemology? 00:12:28.53\00:12:30.75 I mean, we've heard of biology and theology and immunology 00:12:30.78\00:12:36.78 and astronomy and so forth. 00:12:36.81\00:12:40.18 And their names pretty much say what they're dealing with. 00:12:40.21\00:12:44.50 But what is epistemology? 00:12:44.53\00:12:47.83 Well, it's the study of episteme 00:12:47.86\00:12:51.87 which is from the Greek word that means knowledge. 00:12:51.90\00:12:56.33 Now we have to be very careful here. 00:12:56.36\00:13:01.68 Epistemology is not the study of what we know. 00:13:01.71\00:13:07.35 It's not the study of things like red blood cells 00:13:07.38\00:13:10.64 or how the cells feed our brain 00:13:10.67\00:13:12.85 or that the earth rotates on its axis. 00:13:12.88\00:13:15.71 Or that two plus two equals four. 00:13:15.74\00:13:18.34 No, it's much broader than that. 00:13:18.37\00:13:20.99 Instead epistemology is the study 00:13:21.02\00:13:25.09 of how do we come to know the things 00:13:25.12\00:13:28.80 that we know or say to it that we know. 00:13:28.83\00:13:32.08 It's not the, you know, it's-- when we say that it's not-- 00:13:32.11\00:13:37.03 it's the study of things like how we know what we know. 00:13:37.06\00:13:40.82 How do we know that the blood cells, 00:13:40.85\00:13:43.24 what blood cells do? 00:13:43.27\00:13:44.65 How we do know that the earth rotates on its axis? 00:13:44.68\00:13:48.08 How do know that two plus two is equals four? 00:13:48.11\00:13:51.91 Or when I say that I know that Jesus is coming back? 00:13:51.94\00:13:56.83 How do I know that? 00:13:56.86\00:13:58.17 Or when I say that I know that I have a toothache? 00:13:58.20\00:14:01.60 How do I know that? 00:14:01.63\00:14:03.24 One thing is for sure how I know I have a toothache 00:14:03.27\00:14:07.30 is quite different from how I know 00:14:07.33\00:14:09.23 that Jesus is coming back. 00:14:09.26\00:14:11.26 And that's quite different from how I know 00:14:11.29\00:14:13.47 that two plus two that equals four. 00:14:13.50\00:14:16.23 And how I know, you know, and how I know 00:14:16.26\00:14:18.80 that is different from how I know 00:14:18.83\00:14:20.54 that the earth rotates on its axis. 00:14:20.57\00:14:24.22 In each case, I am using the same verb know. 00:14:24.25\00:14:30.73 And I mean pretty much the same thing in every case. 00:14:30.76\00:14:34.26 And that my use of the verb means 00:14:34.29\00:14:35.87 that I'm sure of something that it is correct. 00:14:35.90\00:14:40.04 But in each case I know these things 00:14:40.07\00:14:43.30 in very, very, radically different ways. 00:14:43.33\00:14:47.44 The methods, the reasons, the causes, the steps, 00:14:47.47\00:14:50.55 the procedure, the justifications 00:14:50.58\00:14:53.96 that we use to know something, 00:14:53.99\00:14:56.69 very greatly in these different areas. 00:14:56.72\00:15:00.33 And see the crucial question in epistemology then 00:15:00.36\00:15:04.51 is how accurate are these different ways 00:15:04.54\00:15:07.24 that we come to know what we know. 00:15:07.27\00:15:09.50 Or come to know what we think we know 00:15:09.53\00:15:12.39 because sometimes things we think we know, 00:15:12.42\00:15:14.60 we don't really know 00:15:14.63\00:15:15.66 because they turn out to be wrong. 00:15:15.69\00:15:18.78 How do we know what we think we know is correct. 00:15:18.81\00:15:22.09 This becomes especially important 00:15:22.12\00:15:24.41 because we come to know things in radically different ways. 00:15:24.44\00:15:29.68 And the million-- 00:15:29.71\00:15:30.74 it's the million dollar question 00:15:30.77\00:15:32.47 that people have been wrestling with 00:15:32.50\00:15:34.89 since all through known history. 00:15:34.92\00:15:37.59 Solomon said in Ecclesiastes, 00:15:37.62\00:15:40.01 There is nothing new under the sun. 00:15:43.75\00:15:47.31 Think about this for a minute. 00:15:47.34\00:15:51.10 How do I know, how do I know that I have toothache, okay. 00:15:51.13\00:15:56.92 Well, I feel pain in my tooth, 00:15:56.95\00:15:58.88 that's about as immediate sensation as I can have. 00:15:58.91\00:16:02.31 But you know there's something very interesting here too. 00:16:02.34\00:16:06.18 Some would say that this is a form of knowledge 00:16:06.21\00:16:08.18 that I cannot possibly be wrong about. 00:16:08.21\00:16:10.68 I could be wrong about the reasons 00:16:10.71\00:16:12.41 why I have a toothache, too much candy 00:16:12.44\00:16:16.04 or a filling fell out or I have a chipped tooth 00:16:16.07\00:16:18.81 when I fell down last week. 00:16:18.84\00:16:20.94 I can really be wrong about my understanding 00:16:20.97\00:16:24.36 but I can't be wrong about having a toothache. 00:16:24.39\00:16:28.12 Again I could be wrong about the reasons why 00:16:28.15\00:16:30.75 or I guess I suppose I could be dreaming 00:16:30.78\00:16:33.64 or I suppose some evil demon could be deceiving me 00:16:33.67\00:16:37.26 in some way or another. 00:16:37.29\00:16:39.26 But how could I be wrong about the pain in my tooth, 00:16:39.29\00:16:43.82 whatever the immediate cause is. 00:16:43.85\00:16:46.54 I don't see how? 00:16:46.57\00:16:48.23 That is something we could be pretty sure of. 00:16:48.26\00:16:51.61 But you know that's kind of ironic 00:16:51.64\00:16:54.17 because of all the ways 00:16:54.20\00:16:55.47 we come to know truth and come to know things. 00:16:55.50\00:16:58.79 I mean, aren't feelings about the least trustworthy. 00:16:58.82\00:17:02.72 How often we are told not to trust our feelings? 00:17:02.75\00:17:06.31 I mean, feelings can be very, very deceptive, right? 00:17:06.34\00:17:10.95 How often if you had a gut instinct 00:17:10.98\00:17:13.39 your feelings would lead you astray even at the moment 00:17:13.42\00:17:17.10 when you were absolutely sure. 00:17:17.13\00:17:20.00 You were sure that your gut feeling was right. 00:17:20.03\00:17:23.82 I mean, I tell you one thing I'm glad at the men and women 00:17:23.85\00:17:26.16 who fly jet liners don't make most of their decisions 00:17:26.19\00:17:29.02 based on gut feelings. 00:17:29.05\00:17:32.01 Also, can we use our feelings other ways too? 00:17:32.04\00:17:36.43 I mean, I feel this table. 00:17:36.46\00:17:39.57 I can feel this table and it sure feels solid for me. 00:17:39.60\00:17:45.26 I mean, it sure feel-- my nerve endings touched the table 00:17:45.29\00:17:48.97 and send the message to my brain that, 00:17:49.00\00:17:51.45 that table is hard and solid, okay. 00:17:51.48\00:17:55.59 And, yet, but reality 00:17:55.62\00:17:57.41 what do we know the reality about that table? 00:17:57.44\00:18:00.95 Well, we know what has science taught us? 00:18:00.98\00:18:03.25 Science taught us that this table is mostly empty space. 00:18:03.28\00:18:07.41 The atoms that make up a part are tiny entities 00:18:07.44\00:18:10.61 and I've no idea what they really are down there 00:18:10.64\00:18:13.25 that surrounded by electrons 00:18:13.28\00:18:15.04 and they got this wide space between them. 00:18:15.07\00:18:18.03 Somebody once described that they said of something like 00:18:18.06\00:18:20.33 you had a spec of dust on the floor 00:18:20.36\00:18:22.98 and you put it in Westminster Abbey. 00:18:23.01\00:18:25.33 That's how much empty space is here. 00:18:25.36\00:18:27.87 And, yet, my feelings tell me that it solid, it's hard. 00:18:27.90\00:18:33.89 And, yet, how can I be wrong 00:18:33.92\00:18:35.83 when I say that I have a toothache. 00:18:35.86\00:18:37.87 And I came to know it because I can feel it. 00:18:37.90\00:18:40.50 In fact that would be the only, that would be the only way 00:18:40.53\00:18:43.17 I could know I have a toothache. 00:18:43.20\00:18:45.10 How can anybody else come to the knowledge 00:18:45.13\00:18:47.54 not that they have a cavity or they have my chip tooth 00:18:47.57\00:18:50.74 but they had a chip tooth they can know it only 00:18:50.77\00:18:53.08 because they felt the pain themselves. 00:18:53.11\00:18:55.68 That's one way, okay. 00:18:55.71\00:18:58.75 On the other hand, how do I know 00:18:58.78\00:19:02.55 that two plus two equals four? 00:19:02.58\00:19:06.17 I say that I know two plus two equals four. 00:19:06.20\00:19:10.84 And I can say that I know that I have a toothache. 00:19:10.87\00:19:14.50 Again I'm using the same verb know. 00:19:14.53\00:19:19.04 To mean the same basic thing. 00:19:19.07\00:19:21.92 But I have knowledge about those things 00:19:21.95\00:19:24.23 in completely different ways. 00:19:24.26\00:19:26.94 Clearly, how I know I have a toothache 00:19:26.97\00:19:29.90 is not how I know that two plus two equals four. 00:19:29.93\00:19:33.39 I don't feel that two plus two equals four. 00:19:33.42\00:19:37.01 I don't put my hand on the math equation 00:19:37.04\00:19:39.33 and all I can feel it. 00:19:39.36\00:19:41.24 Two plus two equals four. 00:19:41.27\00:19:43.45 And it sends signals to my brain and tells me that. 00:19:43.48\00:19:48.08 Yet I know two plus two equals four. 00:19:48.11\00:19:52.52 Just assuredly as I know I have a toothache. 00:19:52.55\00:19:56.38 And, yet, it's true, 00:19:56.41\00:19:58.01 I know them in radically different ways. 00:19:58.04\00:20:01.82 The equation that comes from a rational understanding 00:20:01.85\00:20:05.04 of what the number two stands for? 00:20:05.07\00:20:07.39 And what the plus sign stands for? 00:20:07.42\00:20:09.68 And what the equal sign stands for? 00:20:09.71\00:20:12.09 And what the number four stands for? 00:20:12.12\00:20:14.75 There's a certain rational and logical formula 00:20:14.78\00:20:18.11 and a logical relationship between the two 00:20:18.14\00:20:21.17 and the plus and the equals and the four. 00:20:21.20\00:20:23.97 And that causes me to say two plus two equals four. 00:20:24.00\00:20:28.20 Fair enough, okay. 00:20:28.23\00:20:30.16 That's basically how we come to knowledge, 00:20:30.19\00:20:33.10 get that knowledge, 00:20:33.13\00:20:34.16 but it's a whole different root thing, 00:20:34.19\00:20:35.82 you know, you have a toothache. 00:20:35.85\00:20:38.20 What else can I say? What else do we know? 00:20:38.23\00:20:40.98 I could say I know that the earth 00:20:41.01\00:20:43.10 is rotating on its axis. 00:20:43.13\00:20:45.78 But how do I know the earth is rotating on its axis. 00:20:45.81\00:20:49.38 I mean, it sure doesn't feel it's rotating on its axis. 00:20:49.41\00:20:54.01 And if I wanted to I could throw something up 00:20:54.04\00:20:56.06 I can do an experiment right now 00:20:56.09\00:20:58.42 or could challenge it. 00:20:58.45\00:20:59.73 I can throw a rock up in the air 00:20:59.76\00:21:02.01 and if I throw it straight up, 00:21:02.04\00:21:03.93 if the earth were rotating 00:21:03.96\00:21:05.22 wouldn't the rock go one way or another way. 00:21:05.25\00:21:07.53 Instead it falls straight down. 00:21:07.56\00:21:10.82 So how do I know the earth was rotating on its axis? 00:21:10.85\00:21:14.64 Yet, I say I know that it is, 00:21:14.67\00:21:17.02 the same way I know I have a toothache, 00:21:17.05\00:21:19.60 the same way I know two plus two equals four. 00:21:19.63\00:21:23.00 It was funny there was a philosophical 00:21:23.03\00:21:24.62 Ludwig Wittgenstein and somebody went 00:21:24.65\00:21:26.30 and said to him was mocking the ancients. 00:21:26.33\00:21:29.13 Those stupid ancients were actually thinking 00:21:29.16\00:21:31.53 the earth stood still 00:21:31.56\00:21:33.00 and the sun moved across the sky. 00:21:33.03\00:21:36.41 And Wittgenstein said, he said, well, 00:21:36.44\00:21:39.49 "I wonder what it would look like 00:21:39.52\00:21:40.86 if the sun really were moving across the sky." 00:21:40.89\00:21:44.03 Of course the point is it would look exactly the same. 00:21:44.06\00:21:47.46 But anyway how many of you listening right now, 00:21:47.49\00:21:50.47 you know, that the earth is rotating on its axis. 00:21:50.50\00:21:53.78 You know it? You're sure of it. 00:21:53.81\00:21:56.76 But you don't know what how you know 00:21:56.79\00:21:58.65 you have a toothache or a backache, do you? 00:21:58.68\00:22:01.39 Or in my case I got a broken finger ache, 00:22:01.42\00:22:03.84 'cause I got to broke my finger. 00:22:03.87\00:22:05.64 Or do you know what rationally. 00:22:05.67\00:22:07.75 The way you know two plus two equals four. 00:22:07.78\00:22:10.72 I mean, there's nothing deducted that must nothing 00:22:10.75\00:22:13.09 that follows at the earth must rotate on its axis. 00:22:13.12\00:22:17.01 God could have created the world somewhere else. 00:22:17.04\00:22:19.98 But you say, 00:22:20.01\00:22:21.10 you know that the earth is rotating on its axis. 00:22:21.13\00:22:25.43 How do you know that? 00:22:25.46\00:22:27.14 Well, that's even another kind of knowledge. 00:22:27.17\00:22:31.42 This is the type of knowledge that is revealed to you, 00:22:31.45\00:22:35.13 told to you by other sources. 00:22:35.16\00:22:37.87 And, please, how reliable is that. 00:22:37.90\00:22:41.24 I mean, come on, have you not been told things by others 00:22:41.27\00:22:44.66 that have turned out to be utterly, utterly wrong. 00:22:44.69\00:22:48.09 How much wrong information is out there? 00:22:48.12\00:22:51.25 How many people believe things, 00:22:51.28\00:22:54.11 wrong things that have been told to them? 00:22:54.14\00:22:56.89 And, yet, think about it too. 00:22:56.92\00:22:58.79 There's an awful lot we know because it's been told to us. 00:22:58.82\00:23:02.45 Where were you born? 00:23:02.48\00:23:04.18 How do you know that you have been born 00:23:04.21\00:23:05.88 where you were told you were born? 00:23:05.91\00:23:07.62 I was born in Albany, New York. 00:23:07.65\00:23:10.12 I mean, I was aware of my birth 00:23:10.15\00:23:11.52 but it doesn't do me a whole lot of good, 00:23:11.55\00:23:13.96 at least as far as epistemology goes, 00:23:13.99\00:23:16.77 I know I was born there because I've been told 00:23:16.80\00:23:19.48 and I have pretty good reasons 00:23:19.51\00:23:20.85 to believe those who told me that. 00:23:20.88\00:23:24.39 But this leads to something else. 00:23:24.42\00:23:27.24 Maybe people told you in the past things were right. 00:23:27.27\00:23:31.20 Maybe they told you those things were right. 00:23:31.23\00:23:34.20 They tell you this new thing and every time you get 00:23:34.23\00:23:36.45 or maybe somebody told you something 00:23:36.48\00:23:37.87 and every time they told you it was right, okay. 00:23:37.90\00:23:40.73 Thus you have valid reasons for thinking each time 00:23:40.76\00:23:43.80 this person told you something it was right, okay. 00:23:43.83\00:23:48.01 And maybe you do. 00:23:48.04\00:23:49.56 But maybe just because the source 00:23:49.59\00:23:51.20 was right the first time 00:23:51.23\00:23:53.01 or the first 50 times or the first 50,000 times. 00:23:53.04\00:23:57.37 Does it mean the source is gonna be the right 00:23:57.40\00:23:59.51 the next time it gives you information. 00:23:59.54\00:24:02.35 You know, we can get into all things like 00:24:02.38\00:24:04.01 odds and statistics 00:24:04.04\00:24:05.56 and someone told you something, correct 100 times in a row. 00:24:05.59\00:24:09.62 Then you would have reasons to believe 00:24:09.65\00:24:11.36 and to trust him for the 101st time, 00:24:11.39\00:24:14.44 instead if he told you something 00:24:14.47\00:24:15.69 once you have believes and the trust, 00:24:15.72\00:24:17.47 we can get into all that. 00:24:17.50\00:24:19.25 The point is there's still a chance 00:24:19.28\00:24:21.71 of what they told you being wrong. 00:24:21.74\00:24:26.75 Thus the question is, the question in all of this is. 00:24:26.78\00:24:31.48 How reliable are the means 00:24:31.51\00:24:34.86 that we come to the various ways 00:24:34.89\00:24:37.16 we know something. 00:24:37.19\00:24:39.37 And this comes back to what I said earlier. 00:24:39.40\00:24:42.97 I said, when you study science, 00:24:43.00\00:24:46.37 you were studying a form of epistemology. 00:24:46.40\00:24:50.36 It's a very distinct means of synching 00:24:50.39\00:24:52.93 to come to knowledge. 00:24:52.96\00:24:54.62 And if some would argue, it's not a really very reliable 00:24:54.65\00:24:59.14 means of coming to knowledge. 00:24:59.17\00:25:01.06 And we're gonna look at that more in our next-- 00:25:01.09\00:25:03.85 we're gonna look at that more in our next talk. 00:25:03.88\00:25:06.85 But as we close, 00:25:06.88\00:25:08.10 I want you to look at one more question about 00:25:08.13\00:25:12.13 when we look at epistemology and we look at science. 00:25:12.16\00:25:15.91 How reliable it can be because again 00:25:15.94\00:25:17.66 we look at those studies in the beginning. 00:25:17.69\00:25:20.37 They got all the scientific method, all these things 00:25:20.40\00:25:24.10 and look at all the mistakes that they made. 00:25:24.13\00:25:27.47 But see epistemology though presents a very big problem. 00:25:27.50\00:25:33.01 Let say I want to study my epistemology. 00:25:33.04\00:25:35.65 I want to come to know 00:25:35.68\00:25:36.95 how it is I know the things I know. 00:25:36.98\00:25:40.71 But that leads to a big problem. 00:25:40.74\00:25:44.94 How do we study epistemology itself? 00:25:44.97\00:25:49.85 How do we study the methods of knowledge 00:25:49.88\00:25:53.13 when they are the very things 00:25:53.16\00:25:54.60 we are using to study to begin with? 00:25:54.63\00:25:57.35 The methods of knowledge. 00:25:57.38\00:25:58.69 These are the things we're questioning. 00:25:58.72\00:26:00.98 We can study biology, we can study physiology, 00:26:01.01\00:26:05.15 astronomy, theology using various methods of, 00:26:05.18\00:26:09.98 methods of epistemological tools. 00:26:10.01\00:26:12.97 Reason, logic, our senses, revelation, 00:26:13.00\00:26:16.82 things revealed by God or humans or revealed to us 00:26:16.85\00:26:20.58 by someone else and that's all fine. 00:26:20.61\00:26:24.63 But how do we study these tools themselves. 00:26:24.66\00:26:28.08 When the tools themselves are the very things 00:26:28.11\00:26:30.77 that we are questioning. 00:26:30.80\00:26:32.63 How do we study the very things 00:26:32.66\00:26:34.28 that we are using to conduct the study itself? 00:26:34.31\00:26:38.14 If you are using reason to study reason, 00:26:38.17\00:26:41.03 you are kind of going in a circle, right. 00:26:41.06\00:26:44.09 And if you are using your senses 00:26:44.12\00:26:45.76 to study your senses then you are going in a circle. 00:26:45.79\00:26:49.70 How can you trust your senses to teach you about your senses 00:26:49.73\00:26:54.07 especially when your senses are the very things 00:26:54.10\00:26:56.87 you are questioning in the first place? 00:26:56.90\00:27:00.36 And I guess this all boils down. 00:27:00.39\00:27:04.23 I think in many ways, I think 00:27:04.26\00:27:06.99 when we look at science we have to remember 00:27:07.02\00:27:10.56 we are looking at a fallible human endeavor. 00:27:10.59\00:27:16.30 We're looking at fallible subjective 00:27:16.33\00:27:19.66 human beings with prejudices, 00:27:19.69\00:27:23.58 with their own ideas, with their own agendas. 00:27:23.61\00:27:28.26 And I think what we looked at 00:27:28.29\00:27:29.49 in the beginning shows this that 00:27:29.52\00:27:31.74 because science is a form that we said of epistemology, 00:27:31.77\00:27:36.10 it's a form of know-- 00:27:36.13\00:27:39.87 it's a way of trying to learn about the world 00:27:39.90\00:27:43.98 and it can be a very, very fruitful way 00:27:44.01\00:27:47.98 but it also can be a way filled with a lot of pitfalls. 00:27:48.01\00:27:52.62 And I think I think I can so relate 00:27:52.65\00:27:55.44 to the words of the Apostle Paul. 00:27:55.47\00:27:59.00 Because even though he was talking 00:27:59.03\00:28:00.49 specifically about faith. 00:28:00.52\00:28:03.53 It's broader than that. 00:28:03.56\00:28:06.07 He said, "For we see through a glass, darkly." 00:28:06.10\00:28:11.28 That's his way of saying we are limited in what we know 00:28:11.31\00:28:14.66 and that includes science as well. 00:28:14.69\00:28:17.68