Careful - over the last quarter, one could argue that those who have made the best trades are those who understand the market least.
That was the case in late 1999/early 2000, when the new economy crowd was cleaning up.
But in the particular case of which you speak, someone calling for 10% moves either way in a day is not someone who respects or understands the way the market usually works.
Platpower you were looking for $39 tuesday didnt happen. I thought you would be ashamed to come back today, but guess I was wrong. If you feel that way you need to short now or have you already lost.