peter l. montgomery

In article <Z6h0b.100108$dS3.49844@news02.roc.ny>
"Steven" <sgottlieb60@hotmail.com> writes:

Clever, but the intermediate value theorem fails in two dimensions.
Your brother might drive a car along a road and make a U-turn at the
end of a cul-de-sac, heading back the other direction while never stopping.

Even if we approximate the problem as one-dimensional (no turns, no
lane changes), your bother is supposed to stop at the STOP sign.
If he goes past the STOP sign, then goes backwards, and reaches
the STOP sign again in a forward direction, then there should
be three STOPs. Two is not enough.
--
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Peter-Lawrence.Montgomery@cwi.nl Home: San Rafael, California
Microsoft Research and CWI

ronald bruck

Had your brother pulled this on a US Air Force base, he'd have been in
for a surprise. The rule (forty years ago, at least, the last time I
drove on one) was that you had to come to a full stop for FIVE SECONDS.
That's an eternity.

--Ron Bruck

norm dresner

[SNIP of mathematical text]


"Best" is, of course, a very vague term. There are some things for which
Mary Carey is much better suited than even the Arnold.

Norm