“When it turns out you were correct, people opinions of you do not change and they either are upset that you predicted the problems and now want to avoid any mention of your existence or blame you for somehow causing the problems that caused their brilliant plan or reform to fail. Those people who had ignored your warnings will go back to the planning board but now without you.”
— http://ask.slashdot.org/comments.pl?sid=1688530&cid=32598422