There are two types of investors in the market. The first type is A who accepts both good and bad times. The other type is B who only wants to ride in good times and get off in bad times.
B laughs at A for not knowing how to get off, and will just stay on the bus when he is beaten.
But A thinks B's thinking is more dangerous, because B thinks he can be the invincible general in the market and always do the right thing.