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atxgun wrote:

mr.72 wrote: if X, then Y != if Y, then X

however iff x then Y == iff Y then X

???

I dunno "iff".

only if X, then Y == if Y, then X, if X = Y

Which means, in this context, the only way that the presence of a clip knife indicates you are carrying a gun is that the clip knife is the same thing as a gun.

WildBill wrote:

Abraham wrote:I developed my view as 90% of those who I know that carry, also carry a clip type knife. Right there for all the world to see...or left, depending...

Probably 90% of those who carry wear a belt, too.

Yep, and 100% of them are human beings, live on earth, etc...

+1 Annoyed Man's response.

This is a common logical fallacy among Americans (because we don't teach logic in public school). Unfortunately this kind of logical fallacy finds its way into virtually every part of our lives and IMHO is extremely hazardous to our society on many levels (don't get me started, it's a different topic's rant).

if X, then Y != if Y, then X

Even if most people who carry a gun also carry a clip knife, it does not mean that most people who have a clip knife also carry a gun.