People often have difficulty applying the rules of logic. For example, a person might say this syllogism is valid:
p iː p ə l WORD_BOUNDARY ɔ f ə n WORD_BOUNDARY h æ v WORD_BOUNDARY d ɪ f ɪ k ʌ l t i WORD_BOUNDARY ʌ p l aɪ ɪ ŋ WORD_BOUNDARY ð ə WORD_BOUNDARY ɹ uː l z WORD_BOUNDARY ʌ v WORD_BOUNDARY l ɑ d̠ʒ ɪ k WORD_BOUNDARY f ɔ ɹ WORD_BOUNDARY ɛ ɡ z æ m p ə l WORD_BOUNDARY ʌ WORD_BOUNDARY p ɜː s ə n WORD_BOUNDARY m aɪ t WORD_BOUNDARY s eɪ WORD_BOUNDARY ð ɪ s WORD_BOUNDARY s ɪ l ə d̠ʒ ɪ z ə m WORD_BOUNDARY ɪ z WORD_BOUNDARY v æ l ɪ d WORD_BOUNDARY