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From: gdmr@cstvax.UUCP (George D M Ross)
Newsgroups: net.physics
Subject: Re: Possibly poor control?
Message-ID: <302@cstvax.UUCP>
Date: Sat, 29-Jun-85 01:27:46 EDT
Article-I.D.: cstvax.302
Posted: Sat Jun 29 01:27:46 1985
Date-Received: Sun, 30-Jun-85 02:56:57 EDT
References: <2784@decwrl.UUCP>
Reply-To: gdmr@cstvax.UUCP (George D M Ross)
Organization: Comp. Sc., Edinburgh Univ., Scotland
Lines: 18

In article <2784@decwrl.UUCP> wasser@viking.DEC (John A. Wasser) writes:
>	I suspect that no matter WHO did the observing, the light will
>	(for selected periods of time) make rather large excursions
>	to the left and right.....

From "The Theory of Stochastic Processes" by D.R. Cox and H.D. Miller
(just after example 2.7):

         "Thus an unrestricted particle, if allowed sufficient time, is
         certain to make indefinitely large excursions from its starting
         point and is also certain to return to its starting point."

It's probably in Feller somewhere too.
-- 
George D M Ross, Dept. of Computer Science, Univ. of Edinburgh
Phone: +44 31-667 1081 x2730
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