> I like this definition of information: information is anything that 
> reduces
> uncertainty. The smallest unit of information is a bit, of course not only
> in the computer sense.

Actually, sub-bit units of information are common, both in and out of 
computer science!

I believe, for example, that knowledge of the probability of an on/off 
condition can be thought of as sub-bit.

Also, see 'arithmetic coding' for information on compression schemes that 
depend dramatically on sub-bit information.


Bob Ammerman
RAm Systems

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