that's why most people are losing traders---they buy the top and sell the bottom. it's just human nature. at the lows, they think "it's dead." during the bubble, they wait because they want so badly to be right. then at the highs, they think "new paradigm" and buy the top. then they're too stubborn to sell/short when it crashes; they wait to sell the bottom.

as much hate as the asset bubble chart gets around here, it's pretty accurate if you see it as a cyclical kind of thing.