On a percentage basis, in context, it can, and that\'s indisputable. See \"Thoro-Patterns\" for proof. But aside from that, all the things that affect this question are what we discuss in ROTW and handicapping-- how big the top is, time since, how the horse has reacted to previous tops. You are framing the question as a straw man-- we\'re not seeing an amount of stress in one number.
By the way, if the only way to make decisions was if you had first hand physical knowledge of the individual horse, it would be awful tough to bet horses. You would have to know not only about that one, but all the ones he\'s running against, too.
Likewise all other bets and investment decisions...