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- Newsgroups: sci.math
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!howland.reston.ans.net!spool.mu.edu!enterpoop.mit.edu!news.media.mit.edu!minsky
- From: minsky@media.mit.edu (Marvin Minsky)
- Subject: Re: Help me deal w/ infinity
- Message-ID: <1993Jan11.233051.26558@news.media.mit.edu>
- Sender: news@news.media.mit.edu (USENET News System)
- Organization: MIT Media Laboratory
- References: <BzL73K.9xr@usenet.ucs.indiana.edu> <1992Dec23.030309.125@front.se> <11664@sun13.scri.fsu.edu>
- Date: Mon, 11 Jan 1993 23:30:51 GMT
- Lines: 23
-
- In article <11664@sun13.scri.fsu.edu> jac@ds8.scri.fsu.edu (Jim Carr) writes:
- >In article <1992Dec23.030309.125@front.se> samuel@front.se writes:
- >>
- >>If this argument doesn't help, why don't ask your friends exactly how much
- >>they think that 0.999999... differs from 1.
- >
- >Good suggestion. I think this will help these poor souls examine the
- >unexamined assumption that are leading them to have trouble with the
- >proof, which is a very real difficulty with the fact that multiplying
- >.999.... by 10 does *not* change the number of 9s after the decimal
- >point! I would love to overhear their conversation:
- >
- >The difference is 1 times 10 to the something power, lets see... hmm,
- >it would seem that whatever power of 10 I choose, there is a larger
- >power I could use.... how many 9s are there again?
-
- Simpler answer: the difference is precisely 0.000000...
-
- Hmm. Or mabe it's 0.00000... or 0.0000000...
-
- Not so simple after all.
-
- .
-