The Nature Boy said:
true but what about the outcomes? in sports you win lose or push (very rare). in the stock game you can program your online stock broker thingy to sell your stock when it dips below a certain level. right?
In sports, a team can win, lose, or tie.
In stocks, a ticker can go up, down, or no change.
In stocks you can make money off of an up or down scenerio, if you know it is coming.
I don't know enough about sports and betting - but I would imagine that it is the same, you can make money off of a win or loss, as long as you know which it will be ahead of time.
A team has many members, and any one of them could screw up the outcome of the game.
A stock has many things that contribute to its rise/fall - stocks that it is paired with, the people that work at the company, the products that it is based on, etc.
It does sound like if a third baseman just decides he doesn't really care about diving for a ball or not today, that could change a lot in the game, and be hard to predict.
The human error factor - but there is a lot of that in stocks as well - you are essentially hoping that humans are actually at the helm - the fact that they are irrational actually frequently helps.
The issue is that it is unlikely that there is enough data available to track it properly - at least with stocks there is a crapload of data on hand.