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Skip to 0 minutes and 5 secondsSo when we think about how our minds work, we tend to think there's a lot of hidden stuff in there. If we really could think very carefully about all the things we know and why we think them, there'd just be an enormous trail of justifications and reasons. And we can't necessarily probe all those, but if we start to think about them, some of them seem to appear. I think, why did I do one thing? Oh, I did it because of this. And I did that because of something else, and off I go down a series of complicated justifications.

Skip to 0 minutes and 33 secondsAnd it's easy to think that that was just tucked there away in my mind, and what I'm doing is I'm sort of exploring this internal space and this internal mental world. But think about it for a minute. Supposing I ask you, as indeed was asked in quite a well known psychological study many years ago, how some everyday piece of equipment works, for example, the air conditioner? So you think to yourself, air conditioners, well, I must pretty much understand how they work. And you, if you like, perhaps could draw a little diagram, maybe a little exercise for you now, just to think, how would I draw a diagram to explain how an air conditioner works?

Skip to 1 minute and 8 secondsAnd probably if you spend a few minutes having a go at this, you'll find that you are amazingly baffled. It's really, really hard to think, well, sort of warm air goes in and cold air kind of comes out, and there's something pushing it through, and it sort of just gets cold. How does that work? Well, after a bit of pondering, you might start to feel you don't really understand this at all. Interestingly, large numbers of people, when probed on this kind of problem, tend to think they do understand it, and their diagram often, they feel, pretty well encapsulates what an air conditioner does. But really, they don't. None of us do.

Skip to 1 minute and 42 secondsOr at least people who have done lots of physics and thought about it do, but it's pretty puzzling. Now, air conditioners are one thing. We're not very familiar with those. But this is just a general fact about the way the mind works, that we have an illusion of understanding, which is much more rich and varied than the actual understanding inside us. Say, for example, I ask you why you eat a particular breakfast cereal or why you live in a particular house. You may think, well, that's like the air conditioner. I must have a lot of thoughts about that and I can give you some.

Skip to 2 minutes and 17 secondsBut if you start to probe those thoughts and analyse them, you might find that they're actually just as feeble, just as incoherent as your thoughts about how air conditioners work. And actually, that's not surprising because human decisions and the people who make them are obviously far more complicated than air conditioners are. Just one intuition to make you feel unsettled about the things you think you know and the justifications you think you have for your behaviour. Everyone who's had a small child or has contact with a small child will remember the phase in which there's a constant sequence of why questions. And the really puzzling thing about these why questions is you can't answer almost any of them.

Skip to 2 minutes and 54 secondsSo things like, why is the sky blue, or why do we drive this side and not that side? Almost any question a child will produce for you has an immediate sense of, oh, that's a simple question. I know the answer to that. It's easy. Followed by utter bafflement. Now, I want to suggest that this is a really very general problem. We're seeing the world through not just rose tinted spectacles, but almost as if they were sort of panoramic spectacles. We see a world which we think we understand very well. We think we see lots of it. We think we have a full view of what's going on. But in reality, we don't.

Skip to 3 minutes and 34 secondsSo if it's the case that we understand much less than we think, we have an illusion of understanding about the world around us and ourselves, how is this illusion sustained? And the answer is that whenever we ask ourselves a question, we produce an answer. And if we ask ourselves another question, we cook up some answer to that as well. And the trick is that we're very good at creating these instant answers and it gives the impression that the answer is, as it were, lurking in our minds all along. But the instant answer shouldn't be trusted. We just made them up. So here's an interesting example, a very old example from a great social psychology experiment of Festinger and Carlsmith.

Skip to 4 minutes and 11 secondsSo what they did is they asked people to do a fairly boring task. So in fact, they had some sort of peg board, and you had to take the pegs and twist them a quarter of the way around, and then do it again and again and again with many different pegs. Very, very dull. And you were paid a small amount of money. I think it was $1 for doing this task. Now, at the end of the task, you had to get someone else to do it. So your task was to go out and find another recruit.

Skip to 4 minutes and 37 secondsAnd you either got paid a small amount of money to get another recruit to do the task or a really large amount of money. I think it was $20, which when this experiment was done, many years ago, was a very large amount of money indeed. Now, when you go out to get that person and you're getting paid a lot of money to do it, what do you suspect? You think, crumbs, this task must be horrendous. I've got to persuade some poor, unsuspecting person to do something which really has got to be fairly unpleasant because they're paying me $20 to get someone to do it.

Skip to 5 minutes and 4 secondsI'm going to have to pretty much fool them, deceive them into doing the task because if I told them how terrible it really was, then they'd never do it. So it's almost bribery from the experimenters to me that I've got to be given the task of recruiting some hapless subject, so it must be a really miserable thing to do. Of course, the person you actually try to recruit is, in fact, a stooge of the experiment as it's all a con, but off you go. You're paid a little or a lot to get another subject, and then you just asked in passing what you thought of the original task.

Skip to 5 minutes and 39 secondsAnd it turns out that people, as you might suspect given the way I framed it, people who have been paid a small amount of money to get another subject think, well, it wasn't too bad. It was a bit dull. That's OK. It was perfectly fine. But when you've been paid a lot of money to get someone else to do it, you think, well, it must have been awful. So you say it was a terrible task. I hated it. It was very, very boring indeed. In fact, quite unpleasant. Why do you think that? You think that because, as I've suggested, you're trying to make sense of the fact that you've just been given $20 to encourage someone else to do this.

Skip to 6 minutes and 9 secondsIf it's that much they're paying you, it must be a pretty miserable task you're getting someone to do, so you must not have enjoyed it. Must have been a miserable experience. Now, that's an interesting example of the general phenomenon. You might think naively as you go through a task or any experience, you just think on some sort of mental meter, it's good, it's bad, it's indifferent. But according to the view that when you're asked a question, what did you think of that experience, you have to cook up an answer. You don't really know the answer. You think, oh crumbs, gosh, I don't know. Let me think.

Skip to 6 minutes and 42 secondsThen what happened afterwards-- in this case, whether you were paid a lot or a little to get someone else to do it-- what happened afterwards can affect your view. So it turns out that in this experiment, as in many, many others, you infer what you must have experienced based not just on the experience itself, but on things that came later. A rather different but interesting related phenomenon, which you may have noticed yourself, is called hindsight bias. So supposing you are wondering whether something's likely to happen or whether someone's going to succeed in something or whether you're going to enjoy an experience. Afterwards, you look back, and now you know the answer. Did it happen?

Skip to 7 minutes and 24 secondsDid you enjoy the experience or whatever? Now, suppose we ask you what you thought in the first place. So I go to a restaurant. I don't know whether I'm going to enjoy it. It turns out to be awful. Then you ask me, what did you think it would be like before you went? Interestingly, and very, very consistently, I tend, if I had a bad experience, to think I probably might have had a bad experience. I was tending to be suspicious that it was going to be a bad experience. On the other hand, if everything went well, then I tend to have a positive glow about what I thought in the first place.

Skip to 7 minutes and 57 secondsSo if you're asking me after the event, what did I think before the event, I tend to shift and to shuffle my thoughts in the direction of what I actually know to be true. So, for example, if I make a decision and it goes horribly wrong or if you make a decision and it goes horribly wrong, we tend to think, ah, I should have known, or I half knew, or I feared this would happen. And if it goes right, I tend to think, I always had a feeling that was going to work out, that new hire was going to be a success, or those builders were going to be great.

Skip to 8 minutes and 33 secondsThe same story that we talked about earlier is going on. So it's not the case that as I go through my life, I have a clear idea of what I think and how strongly I think it. When you ask me what I thought about something, I can't look back in my mental record and say, hang on. I've got a detailed record of all my thoughts, and there they all are written down. I'll just have a quick look. I can't do that. When you ask me a question about what I thought in the past, I have to cook up an answer now. I have to infer what I probably thought.

Skip to 9 minutes and 2 secondsAnd of course, if you ask me whether I thought something would be a success or a failure, and I know it was a success, perhaps a failure, I tend to think, well, it did work out really well. I know that, and that probably was something I suspected, because normally, I'm a fairly sensible person. So I tend to twist my interpretation of what I thought in the first place towards what actually happened. I tend to be biassed by hindsight. Now, of course, this is something we see all over the place in the news and in daily life. People are always saying, well, I knew that would happen. I knew that was a mistake. And you may respond, no you didn't.

Skip to 9 minutes and 38 secondsWe talked about it and there was no mention of this at the time. But of course hindsight bias is a very powerful illusion and it fools all of us. And the reason is that we don't have, as we flow through our lives, a clear record what we believe, of what we value, of the nature of our experiences. When you ask me a question about what I thought in the past, I cook up the answer now. If I know stuff now, like it was a disaster, it all went horribly wrong, I can't get that out of my mind and ignore it to try and get back to what I really thought in the first place.

Skip to 10 minutes and 11 secondsAnd in fact, it is quite possibly the case that there really is no answer to what I really thought in the first place. And we'll see that in a second.

The mind as an improviser

If we really could think very carefully about all the things we know and why we think them, there’d just be an enormous trail of justifications and reasons.

I think, “Why did I do that one thing? Oh, I did it because of this… and I did that because of something else”. We see a world that we think we understand very well. We think we see lots of it. We think we have a full view of what’s going on.

But, as I begin to explore in this video, in reality, we don’t.

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The Mind is Flat: the Shocking Shallowness of Human Psychology

The University of Warwick

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