I read taleb's book "fooled by randomness" and it is truly a great book, even though Taleb has an ego the size of a mountain ( although he is successfull, talented, etc. )
For me the meaning of the book is that in the market, you cannot ignore something just because it is unlikely, which is counter to common sense. To do so is to play russian roulette. The chance of losing in russian roulette is only 1 in 6, for a six shot revolver. However, the penalty for losing is death. Even though you have a 5 out of 6 chance of winning the game, do play the game is totally foolish. Taleb sees naked option sellers at russian roulette players, and the ones that become famous are just the ones that haven't died.....yet. I think he is probably right.
However, he doesn't talk about spreads at all. With a spread the worst possible outcome is not wipeout unless you put your whole account into it. I would like to know what he thinks about that.