Article View: comp.ai
Article #8806Time running backwards (WAS: Entropy and the human brain)
From: Ian Sutherland
Date: Wed, 07 Feb 1990 01:43
Date: Wed, 07 Feb 1990 01:43
26 lines
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1897 bytes
In article <538@massey.ac.nz> ARaman@massey.ac.nz (A.V. Raman) writes: >In article <HWAJIN.90Feb2124037@ganges.wrs.com> hwajin@ganges.wrs.com (Hwa Jin Bae) writes: >>It's also not clear what he means by "entropy" here as he doesn't clarify >>what he considers "entropy" or "negative-entropy". Claude Shannon was >>knowned to have said that he was urged to use the word "entropy" in his >>information theory by Von Neuman who asserted that he should use it because >>no one really knows what it means. Entropy has at least one precise definition. There are also thermodynamical definitions of the change in entropy which do not rely on the definition of an absolute entropy. No one may know what entropy "means" in some sense, but there do exist precise definitions of it. >By negative entropy, here, I meant the situation where every event in the >universe, started reversing. You seem to be using a technical term with a precise meaning to talk about an imprecisely defined notion with only a vague connection to the technical term. If you meant "time running backwards", why didn't you just say that? Better yet, why don't you start using that terminology from this point on? -- Ian Sutherland ian%oravax.uucp@cu-arpa.cs.cornell.edu Sans Peur
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arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!mcgill-vision!bloom-beacon!bu.edu!bu-cs!snorkelwacker!think!zaphod.mps.ohio-state.edu!rpi!batcomputer!cornell!oravax!ianReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!mcgill-vision!bloom-beacon!bu.edu!bu-cs!snorkelwacker!think!zaphod.mps.ohio-state.edu!rpi!batcomputer!cornell!oravax!ian From: ian@oravax.UUCP (Ian Sutherland) Newsgroups: comp.ai Subject: Time running backwards (WAS: Entropy and the human brain) Message-ID: <1324@oravax.UUCP> Date: 7 Feb 90 01:43:57 GMT References: <523@massey.ac.nz> <940@watserv1.waterloo.edu> <HWAJIN.90Feb2124037@ganges.wrs.com> <538@massey.ac.nz> Reply-To: ian@oravax.odyssey.UUCP (Ian Sutherland) Organization: Odyssey Research Associates, Ithaca, New York Lines: 26