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We will illustrate our ideas using the example of learning by
doing in the Tower of Hanoi problem.
We give the first few lines of the verbalization protocol,
from Yuichiro Anzai and Herbert A. Simon,
``The Theory of Learning by Doing'',
Psychological Review, Volume 86, pages 124-140, 1979.
We can analyze this fragment as a sequence of 3 episodes,
comprising one larger episode which is one attempt at the problem.
1. I'm not sure, but first I'll take 1 from A and place it on B.
2. And I'll take 2 from A and place it on C.
3. And then, I take 1 from B and place it on C.
(If you can, tell me why you placed it there)
4. Because there was no place else to go, I had to place 1 from B to C.
5. Then, next, I placed 3 from A to B.
6. Well . . . , first I had to place 1 to B, because I had to move
all disks to C. I wasn't too sure though.
7. I thought that it would be a problem if I placed 1 on C rather than B.
8. Now I want to place 2 on top of 3, so I'll place 1 on A.
9. Then I'll take 2 from C, and place it on B.
10. And I'll take 1 and . . . place it from A to B.
11. So then, 4 will go from A to C.
12. And then . ., um . . ., oh . . ., um . . .,
13. I should have placed 5 on C. But that will take time. I'll take 1 . .
(If you want to, you can start over again. If you are going to do that,
tell me why.)
14. But I'll stay with this a little more . . .
15. I'll take 1 from B and place it on A.
16. Then I'll take 2 from B to C.
17. Oh, this won't do . . .
18. I'll take 2 and place it from C to B again.
19. And then, I'll take 1, from A . . .
20. Oh no! If I do it this way, it won't work!
21. I'll return it.
22. OK?
23. I'll start over.
(Go ahead)
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