It's kind of interesting to show that the strange features of quantum mechanics are actually observed. We still don't totally understand what it means.
as quoted by James Glanz, in Leonard Mandel, 73, Revealer Of Light's Weirdness, Is Dead, New York Times (Tuesday, February 13, 2001)
Leonard Mandel, 73, Revealer Of Light's Weirdness, Is Dead - NYTimes.com