The following problem is given: It takes thirty minutes to fo on foot to a certain village, or five times faster by bicycle. How long will it take on a bicycle?

... 'One minute!'

'How did you know?'

'If he goes fast, he will get there in one minute. You said, a man goes on foot to your village. How long will a bicycle take?'

The problem is repeated. ...

'In about one minute, perhaps a little more, perhaps a little less.'

'If a man takes thirty minutes and a bicycle goes five times faster, how will it get there in one minute?'

'I myself haven't seen how the go, but i imagine that they could get there in one minute.'

'Well, you figure it out.'

'Well, by my reckoning, it would be like tthis: perhaps a minute, perhaps half a minute.

... The subject is given thirty buttons and asked to use them to solve the problem. The condition is repeated.

'But what village? Karasu? No, it can't be figured out like this. I'll say roughly: perhaps two minutes, perhaps two and a half, or perhaps one, there's nothing to figure out here.'

... It is explained to the subject that 'five times faster' means that a bicycle could make the trip five times in the time it took for a man on foot to do it once. So how much time would it take for one trip?

'But why should he make five extra trips and waste time like that?!'

'But still, how long would he take to get there?'

'If you were to tell me how many versts is is to the village, I could answer you!'

... 'No, think about it. The cyclist spends five times less time.'

'Perhaps while the one on foot was travelling for five or six minutes the cuclist would cover the distance in a minute!'

... 'How long would it take him to go the entire distance?'

'If a man on foot travels for eleven or twelve hours, a cyclist would go five or six times the distance in the same time.'

... 'How much time would it take him to get to the village?'

'We don't reckon in hours; I had better reckon in days.'

... 'Well, then, assume that it takes thirty days on foot, and five times faster by bicycle.'

'You'll get there five or six days earlier on a bicycle, The cyclist will have gotten there when the man on foot has been going for five or six days.'

... 'Why do you think it will be five or six, rather than three or four?'

'We Uzbeks usually say five or six, so that's why I said ...'

(Luria, 1976)