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C00002 00002 For review of Heims's book
C00005 00003 Kline
C00008 00004 Minsky:
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For review of Heims's book
William Aspray, interested in von N and Wiener or was it von N and Turing
math dept williams
build one like ours
against big memories
no interest in Newell, Simon, Shaw
Heims has no patience with the reasons people give for
their actions. For example, as someone who would have finished
basic training at the time scheduled for the invasion of Japan,
I can imagine that President Truman had reasons apart from
rivalry with the Russians for approving use of atomic bombs.
Perhaps he thought that relatives of soldiers who died
More questions for Armer:
When was von Neumann letter against purchase of large memory?
plane geometry was a lovely subject, and the new math people were
wrong to kill it.
In an undoubtedly apocryphal story, von Neumann is told
that two trains start 100 miles apart moving towards one another
at 40 and 60 miles per hour respectively. A bee flying 80 miles
an hour starts at the same time from one end, flies till it meets
a train reverses its course, meets the other train, reverses again,
etc. until it is crushed in the collision of the trains. How far
did the bee fly? After 30 seconds, von Neumann gives the
correct answer - 80 miles. He is told that some physicist
took 30 seconds and indignantly
replies, "Don't be silly. No physicist can sum a series that fast."
Kline
summary
Each of these books tells some history of mathematics and
mathematicians to support a general thesis. The history is interesting
mostly accurate, but I don't believe the theses.
Professor Kline's history of mathematics centers around
the thesis that mathematics has suffered repeated disasters, shocks
and xxx and lacks the certainty that it was once reputed to have.
When one begins the study of mathematics, one is interested
in learning from others how to solve problems. Some people, after getting good
at this, then develop an interest in rigorous reasoning. They want to
develop methods of solving harder problems, and they want to be able to prove
that their new methods are correct. Eventually they become aware that
what their understanding
of what they took for granted about the elementary parts of mathematics
does not have the rigor that they later learned to appreciate. Some of
them even become interested in the "foundations of mathematics".
Forgetting their own attitude as beginners, they often become pedantic
pests and suppose that beginners want to have everything proved from
whatever the new rigorist has come to believe are first principles.
As it was with the individual, so it was with the development of
mathematics itself. The Babylonians and Egyptians were only interested
in methods of solving problems, and it was left to the Greeks to develop
the rigorous methods of Euclidean plane geometry. While the higher level
parts of Greek geometry became rigorous, at the bottom vagueness remained.
A point was "defined" as that which has no parts, and the need for having
postulates about when one point on a line is between two others was not
noticed until the late nineteenth century.
Minsky:
1. von N. told Tucker that Minsky's thesis topic would eventually
lead to good mathematics.
2. generally encouraging but not interested in neural nets
3. Wiener was so insecure as to be hard to talk to.
Hurd:
1. look at computers and the brain
2. von N. did not express himself about memory size, was for symbolic
assembly programs, consulted on combining symbolic and numerical
computation.
Simon:
1. contact on economics
2. self-generating complexity, hixon
3. warning against brain analogy
4. computers weren't brains
5. chess playing computers, negative to Shannon idea
Simon motivated by counter-reaction
6. started work in 36
7. mcculloch pitts, grey walter, ashy, rashevsky,
8. selfridge and dineen
Samuel:
1. no opinion of checker efforts
2. mainly numerical computation
3. 1024 words was enough
4. Wiener liked to lecture on Samuel's program, wrong and exalted ideas
5. McCulloch did write some programs but too early to run them