From: Platt Holden (pholden@sc.rr.com)
Date: Tue Jan 04 2005 - 16:08:15 GMT
Ian:
.
> However precise there is always some residual uncertainty, except in closed
> cases with simple logical / mathematical relationships, where perhaps the
> certainty is 100%. Of course in 80% of the real life cases the residual
> uncertainty could probably be vanishingly small for all practical purposes.
To Leif you said, "no-one can ever be completely sure of anything" which
logically is self-refuting because it asserts something you are completely
sure of. Now you may not want to connect this and the 100% certainty of
logic/math to "practical purposes" but I'll bet in your engineering work
you do precisely that, at least I hope your are not building bridges or
the like that a logically self-contradictory. Am I correct in assuming
that you would agree with Pirsig that one of the standards of truth is
"logical consistency." And a related question: If the uncertainty of which
you speak is "vanishingly small" in "real life," why be concerned with it?
Platt
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