View Here : What Was Little Brown Thinking When
M. Gladwell, Blink: The Power of Thinking Without Thinking (New York: Little, Brown, 2005), 3–8. Gladwell doesn’t actually use the words intuition or intuitive much in Blink, but that is more a matter of word choice than of intended meaning.
Little brown mushrooms, or LBMs, is the name given to all small, brownish mushrooms that are hard to identify. This page gives more info on lbms, including the deadly Galerina marginata.