AI koan
<humour> /A-I koh'an/ One of a series of pastiches of Zen teaching
riddles created by Danny Hillis at the MIT AI Lab around various major figures
of the Lab's culture.
See also ha ha only serious, mu.
In reading these, it is at least useful to know that Marvin Minsky, Gerald
Sussman, and Drescher are AI researchers of note, that Tom Knight was one of the
Lisp machine's principal designers, and that David Moon wrote much of Lisp
Machine Lisp.
* * *
A novice was trying to fix a broken Lisp machine by turning the power off
and on.
Knight, seeing what the student was doing, spoke sternly: "You cannot fix a
machine by just power-cycling it with no understanding of what is going wrong."
Knight turned the machine off and on.
The machine worked.
* * *
One day a student came to Moon and said: "I understand how to make a
better garbage collector. We must keep a reference
count of the pointers to each cons."
Moon patiently told the student the following story:
"One day a student came to Moon and said: `I understand
how to make a better garbage collector...
[Pure reference-count garbage collectors have problems with circular
structures that point to themselves.]
* * *
In the days when Sussman was a novice, Minsky once came to him as he sat
hacking at the PDP-6.
"What are you doing?", asked Minsky.
"I am training a randomly wired neural net to play Tic-Tac-Toe", Sussman
replied.
"Why is the net wired randomly?", asked Minsky.
"I do not want it to have any preconceptions of how to play", Sussman said.
Minsky then shut his eyes.
"Why do you close your eyes?", Sussman asked his teacher.
"So that the room will be empty."
At that moment, Sussman was enlightened.
* * *
A disciple of another sect once came to Drescher as he was eating his
morning meal.
"I would like to give you this personality test", said the outsider, "because I
want you to be happy."
Drescher took the paper that was offered him and put it into the toaster,
saying: "I wish the toaster to be happy, too."
(1995-02-08)
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