The Power of Positive Thinking believe and live successfully.” Peale's work came under criticism from various mental health experts, theologians, and academics. One general criticism against Peale's book was the lack of verified sources. "The Power of Positive Thinking" includes many personal anecdotes that the reader has no way of validating. The book includes stories about “a business executive”, “a man, an alcoholic”, “a famous trapeze artist”, “a friend of [Peale’s], a midwestern businessman”, and other unnamed individuals which cannot be verified from the information Peale presents with each anecdote. R. C. Murphy, a prominent psychiatrist based out of Tacoma, Washington, addresses another criticism of
Blink: The Power of Thinking Without Thinking that Gladwell in "Blink" fails to follow his own recommendations regarding thin-slicing, and makes a variety of unsupported assumptions and mistakes in his characterizations of the evidence for his thesis. The Daily Telegraph review writes, "Rarely have such bold claims been advanced on the basis of such flimsy evidence." In "Think!: Why Crucial Decisions Can't Be Made in the Blink of an Eye" (Simon and Schuster, 2006), Michael LeGault argues that "Blinklike" judgements are not a substitute for critical thinking. He criticises Gladwell for propagating unscientific notions: As naturopathic medicine taps into a deep mystical yearning to be healed by