Now the elements of social proof begin to work. People who are uncertain of how to bet the race look to the tote board to see which horse the early bettors have decided is a favorite, and they follow. A snowballing effect now occurs as other people continue to bet the favorite. At this point, the high roller can go back to the window and bet heavily on his true favorite, which will have better odds now because the ‘new favorite’ has pushed down the board. If the guy wins, the initial hundred-dollar investment will have been worth it many times over.

