Board Thread:General Discussion/@comment-32182236-20190721003717/@comment-26907577-20190723204056

As to affirming the consequent, it is the difference between an inclusive or (OR), and an exclusive or (XOR).

To show the difference, some truth tables*: A B > A OR B F F > F F T > T T F > T T T > T

A B > A XOR B F F > F F T > T T F > T T T > F

Make sure you understand this before saying anything involving an "or".

* Truth tables: A B > A AND B T F > F If A (first column) is true (T), and B (second column) is false (F), then the function A AND B (third column) is also false, because an AND function is only true if both inputs are.