Lafari@lemmy.world to No Stupid Questions@lemmy.world · 10 months agoIs "If A then B" equal to "B if and only if A"?message-squaremessage-square59fedilinkarrow-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 · 10 months agomessage-square59fedilink
minus-squareMoobythegoldensock@lemm.eelinkfedilinkarrow-up8arrow-down1·edit-210 months ago“If X is cat, then X is mammal” =?> “X is mammal if and only if X is cat” Obviously doesn’t hold: What if X doge?
“If X is cat, then X is mammal” =?> “X is mammal if and only if X is cat”
Obviously doesn’t hold: What if X doge?
Great analogy!