>...but I'd say it's very reasonable to hold a big company responsible for whatever it says or does, when it affects market operating amounts of money some of u

>...but I'd say it's very reasonable to hold a big company responsible for whatever it says or does, when it affects market operating amounts of money some of us can't even imagine. To me, this seems like a flaw in the financial system. I realize that public companies are held to higher standards of behavior in their communications, but I really feel that the standard should be enforced based on what a reasonable human would conclude, not based on what a currently state-of-the-art computer program would conclude. > If he does it with a dice, or a brain, or a pen and paper, or computer — doesn't matter. I agree with this 100%, but I would then say that a company shouldn't be responsible for a trader deciding poorly. If the trader uses an algorithm that can't handle a well-known custom like April Fools Day, then, to me, that is the trader's problem.