Board Thread:General Discussion/@comment-32182236-20190721003717/@comment-26907577-20190721194324

However, "if A, then B", does imply the contrapositive "if not B, then not A"

Also, it would not be an appeal to incredulity if you disprove not just all alternate hypotheses, but also all alternate possibilities, e.g disproving something being "not bad" does not imply it is good unless you also disprove it is neither (neutral or otherwise falling into neither category).