Lafari@lemmy.world to No Stupid Questions@lemmy.world · 8 个月前Is "If A then B" equal to "B if and only if A"?message-squaremessage-square61fedilinkarrow-up150arrow-down111
arrow-up139arrow-down1message-squareIs "If A then B" equal to "B if and only if A"?Lafari@lemmy.world to No Stupid Questions@lemmy.world · 8 个月前message-square61fedilink
minus-squareBananaTrifleViolin@kbin.sociallinkfedilinkarrow-up8arrow-down1·edit-28 个月前Actually a good example: If you have AIDs (A) then you have HIV (B). True You have HIV (B) if, and only if, you have AIDS (A). Not true If you don’t have HIV (B), then you don’t have AIDs (A). True, and the actual inverse of “If A then B”; which is “If not B, then not A”
minus-squareAmidFuror@kbin.sociallinkfedilinkarrow-up5·8 个月前It’s important to stress the “full blown” modifier in any example.
Actually a good example:
It’s important to stress the “full blown” modifier in any example.