Mao gave contradicting statements on the subject of personality cults. His paradoxical thesis is based on his conclusion contradicting his premises. Multiple hypothesis have been put forward, with evidence both supporting and contradicting them. "Flashbulb memories" are another piece of seemingly contradicting evidence. He has also been accused of contradicting himself on various philosophical questions. India has been elusive, and contradicting evidence has emerged. His public preaching contradicting church teaching was also referenced in the letter of excommunication. He remained careful, however, to avoid contradicting Maoist ideology on paper. The recurrence theorem may be perceived as apparently contradicting the second law of thermodynamics. Therefore, further investigation is required to resolve these contradicting observations. Related to these are various of the economic puzzles, concerning phenomena similarly contradicting the theory. The opposition results only in negation and the consequent destruction of contradicting aspects. Sorry for contradicting what I remarked yesterday. Thus Einstein was contradicting the undulatory theory of light held by Planck. Greek historians give contradicting accounts of events.