**From:** Peter de Blanc (*peter.deblanc@verizon.net*)

**Date:** Thu May 26 2005 - 13:30:29 MDT

**Next message:**Marc Geddes: "Bayesian epistemology versus Geddesian epistemology"**Previous message:**Peter C. McCluskey: "Re: Beating the rush"**In reply to:**Marc Geddes: "Re: Proposed Universal data types"**Messages sorted by:**[ date ] [ thread ] [ subject ] [ author ] [ attachment ]

Here's an example, then. Let's suppose we know that A, and we know that

A->B. This can also be written as:

P(A) = 1 and P(B | A) = 1

So using deductive reasoning:

A

A -> B

-------

B

And using probabilistic reasoning:

P(B) = P(A) * P(B | A) + (1 - P(A)) * P(B | ~A)

= 1 * 1 + 0 * P(B | ~A) = 1

Mr. Geddes, I think you may be interested in reading _Probability

Theory: The Logic of Science_ by ET Jaynes. It's a large book, but

reading the first 30 pages or so should be enough to clear these matters

up for you.

**Next message:**Marc Geddes: "Bayesian epistemology versus Geddesian epistemology"**Previous message:**Peter C. McCluskey: "Re: Beating the rush"**In reply to:**Marc Geddes: "Re: Proposed Universal data types"**Messages sorted by:**[ date ] [ thread ] [ subject ] [ author ] [ attachment ]

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