Dear Bazz,

A + B is greater than AB.

A + B = AB only in the special case where A = B.

csteele,

if you are trying to convince me that your words are more true than that of Christ's then you are wasting your breath. Like every man except Christ you to have lied.

David f;

If condition A is true AND condition B is true
then AB is true ?

A-|
. .|--AB
B-|

Hmmm this website is no good for logic diagrams, hi !

David F and Bazz, if you are talking about the truth of genetics and blood groups, then
A+B does not always equal AB.

A + B could equal AB, or just A or just B.

So 'truth' can and does have different meanings...

IMHO, david f knows what he is talking about (the union of two sets always contains their intersection, similarly in Boolean algebra); I am not so sure about the others.

Dear Hasbeen,

Engineers are tradesmen - not philosophers.

I don't understand why engineering is taught at university level.

If it was a requisite to have a degree in engineering to work as an engineer than 70% of engineers in Australia would be out of a job.

Selecting building or machine elements in accordance with statutory codes and regulations is not the same as the search for knowledge.