Xref: utzoo comp.dcom.modems:1161 comp.misc:1599 comp.protocols.misc:190
Path: utzoo!mnetor!uunet!mcvax!jack
From: jack@cwi.nl (Jack Jansen)
Newsgroups: comp.dcom.modems,comp.misc,comp.protocols.misc
Subject: Re: Inquiry on the program 'blast'
Message-ID: <155@piring.cwi.nl>
Date: 23 Dec 87 21:29:13 GMT
References: <150@piring.cwi.nl> <2396@macom1.UUCP>
Organization: AMOEBA project, CWI, Amsterdam
Lines: 17

In article <2396@macom1.UUCP> michael@macom1.UUCP (John Michael Mullins) writes:
>I think the interpretation on the 100% error free is along the line of:
>After the file gets to it's destination, the source and the destination 
>will be exactly the same, 100% of the time.  
>
Yes, it probably is, but unfortunately this is theoretically impossible.

As a very simple example: assume the last packet is broken, and at the
same time some random line noise happens to look like 'yes, thank you,
it was delicious'.
Adding another set of acknowledgements doesn't help: then I make
the line noise do the same thing to those packets.

It's a variation of the 2 army problem.
-- 
	Jack Jansen, jack@cwi.nl (or jack@mcvax.uucp)
	The shell is my oyster.