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Path: utzoo!watmath!clyde!cbosgd!ihnp4!houxm!hou2h!mr
From: mr@hou2h.UUCP (M.RINDSBERG)
Newsgroups: net.sf-lovers
Subject: Re: Human transportation by UUCP
Message-ID: <1087@hou2h.UUCP>
Date: Fri, 11-Oct-85 10:49:14 EDT
Article-I.D.: hou2h.1087
Posted: Fri Oct 11 10:49:14 1985
Date-Received: Sat, 12-Oct-85 18:35:04 EDT
References: <> <344@proper.UUCP>, <447@calgary.UUCP>
Organization: AT&T Bell Labs, Holmdel NJ
Lines: 42

> In <344@proper.UUCP>, Carl Greenberg writes:
> > 	If you can do that, look at travel.  If I want to go over and visit
> > a friend of mine on the USENET, I leave a backup copy at home in case UUCP
> > fails and my friend will just download the copy that travels.  ZAP!  I can
> > take a short vacation in the time it takes for this message to travel to
> > him.
> > 						Carl Greenberg
> 
> Interesting idea!  I wonder how long it would take to transport the typical
> human via UUCP....  Well, let's assume a mass of, say, 50 kg.  If we assume
> that the average molecule in the human body is water, then we've got
> approximately ( 5e4 g * 6e23/18 molecules/g ) = 1.7e27 molecules.  Let's
> assume an effective throughput of 800 baud.  (We may want to add extra

What if we use a throughput of a the full bandwidth of a fiber cable.
Say 2 Ghz. , then 1Gbit/s (~maximum) . This is still too slow.
Therefore we must wait about 100 years till we can do this.

> error checking which will slow this down.)  If we manage to come up with,
> say, a dozen data compressions, each of which compresses the data by an
> order of magnitude, and if the initial data requires one bit per molecule
> to represent, then it should take us ( 1.7e27 bits / 800 bps / 1e12 ) =
> 2e12 seconds, or about 63000 years.  Hmmm, looks like this is going to be
> a longer vacation than we had anticipated....
> 
> Well, we're not about to be discouraged by this.  Instead, let's turn it
> around and figure out the effective baud rate of a human walking across
> the country.  We'll pick a distance of 4000 miles or so, an average walking
> speed of 2 mph, with time out for eating and sleeping leaving about 8 hours
> per day for actual walking.  That gives us a data transfer rate of roughly
> ( 1.7e27 bits * 2 mph / 4000 miles * 1/3 ) = 2.8e23 bits per hour, or
> about 1e27 baud.  Hey, that's pretty good!  Even if the human body has an
> information content of only, say, 1 part in 1e15, that still gives us
> 1e12 baud.  The catch, of course, is that the data has been severely
> corrupted by the time it arrives at its destination.  Oh well, you have
> to expect to lose something at that kind of data transfer rate.
> 
> Alan Dewar
> ..!{ihnp4,ubc-vision}!alberta!calgary!dewar
> dewar.calgary.ubc@csnet-relay.ARPA
> 
>