[plt-scheme] abstract wall of recursion

From: mike (anesward at mac.com)
Date: Sun Nov 22 15:54:47 EST 2009

Problem 14.3.4 and 15.1.2 were certainly challenging but i was able to
solve them by not thinking too deeply about the
recursive procedures embedded within both solutions. And
that is the problem if i try to think too much about what is
going on, i feel i'm hitting an abstract wall made of steel.
 I hope this unsettled feeling is part of the learning process
and will pass.

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