Small introspective program

[Richard A. O'Keefe]

The subject line is seriously misleading.  None of the examples that
has been posted has anything to do with INTROSPECTION (one might call
3-Lisp introspective, perhaps even Scheme, with its built in function
call-with-current-continuation).  They are SELF-REPRODUCING programs,
which is something rather different.  A program would be introspective
if it could take a step back from itself and watch its own workings.
(One might even call a UNIX program that has called monitor() or profil()
an introspective program.)  Self-reproducing programs are old hat.
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