[net.ai] the halting problem in history

mac@uvacs.UUCP (11/10/83)

   If there were any 'subroutines' in the brain that could not
   halt... I'm sure they would have been found and bred out of
   the species long ago.  I have yet to see anyone die from
   an infinite loop. (umcp-cs.3451)

There is such.  It is caused by seeing an object called the Zahir.  One was
a Persian astrolabe, which was cast into the sea lest men forget the world.
Another was a certain tiger.  Around 1900 it was a coin in Buenos Aires.
Details in "The Zahir", J.L.Borges.

kissell@flairvax.UUCP (Kevin Kissell) (11/13/83)

"...If there were any subroutines in the brain that did not halt..."

It seems to me that there are likely large numbers of subroutines in the
brain that aren't *supposed* to halt.  Like breathing.  Nothing wrong with
that; the brain is not a metaphor for a single-instruction-stream
processor.  I've often suspected, though, that some pathological states,
depression, obsession, addiction, etcetera can be modeled as infinite
loops "executed" by a portion of the brain, and thus why "shock" treatments
sometimes have beneficial effects on depression; a brutal "reset" of the
whole "system".