<a href="http://lesswrong.com/lw/r6/an_intuitive_explanation_of_quantum_mechanics/" rel="nofollow">http://lesswrong.com/lw/r6/an_intuitive_explanation_of_quant...</a><p>"There's a widespread belief that quantum mechanics is supposed to be confusing.  This is not a good frame of mind for either a teacher or a student.  Complicated math can be difficult but it is never, ever allowed to be confusing."