Kindergartners beat the heads of the largest brokerage houses in picking stocks on a fairly regular basis. In fact, monkeys do, too.

I suppose if you're informed and have the sack, you could do nicely. Staying informed is the challenge.
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She was standin' alone over by the juke box, like she'd something to sell.
I said "baby, what's the goin' price?" She told me to go to hell.

Bon Scott - Shot Down in Flames