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- Path: sparky!uunet!spool.mu.edu!uwm.edu!ogicse!flop.ENGR.ORST.EDU!flop.ENGR.ORST.EDU!usenet
- From: johnh@xanth.CS.ORST.EDU (John E. Holeman)
- Newsgroups: rec.puzzles
- Subject: Re: Billion-year survivability
- Message-ID: <1epvfaINNla5@flop.ENGR.ORST.EDU>
- Date: 23 Nov 92 06:58:50 GMT
- Article-I.D.: flop.1epvfaINNla5
- References: <10920011@pollux.svale.hp.com> <1992Nov10.134633.9751@hellgate.utah.edu> <tim.722137373@giaeb>
- Organization: Oregon State University
- Lines: 13
- NNTP-Posting-Host: xanth.cs.orst.edu
-
- In article <tim.722137373@giaeb> tim@giaeb.cc.monash.edu.au (Tim Roberts) writes:
- >tolman%asylum.cs.utah.edu@cs.utah.edu (Kenneth Tolman) writes:
- >
- >>>If I wanted to send information to a society that will inhabit the earth
- >>>one billion years in the future, how would I do it?
- >
- Wouldn't it be possible to leave the message in the form of a radioactive
- substance with a half-life of nearly a billion years and contrast it with
- some substance which is either stable or has a different half-life, so that
- when a billion years rolls around the message "appears" to anybody
- who has the ability to detect it? Of course this assumes that it will be
- left somewhere where it can be found and that the existing society can
- interprit the message...
-