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![]() "chuck" wrote in message ... you can restate most negatives as positives. an example of this is a logical statement, in which case the contrapositive is always true. if P, then Q. if not Q, then not P. Afraid you have this wrong, gravity. Consider: P=today is my birthday Q=I will receive a present If (today is my birthday) then (I will receive a present). If (I will receive a present) then MAYBE today is my birthday and MAYBE it is not. that's not the contrapositive. that's the converse, i think. Gravity |
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