No. Obviously when I say "everyone decided to sell" I'm speaking figuratively.
In any case, thanks a lot for that link. Cool stuff, I didn't know about the NFP. So if it was released Friday in the morning, how come the plunge happened only happened Monday? I still prefer my view that a tiny bit of data cause people to expect a drop and get edgy, and at some point they all start selling. ("all start selling", again figuratively.)
This is opposed to a bunch of people having done some ahead of time calculations like "if the NFP comes out about X we sell, if it comes out below X we buy. Oops it's about X, lets sell". I suspect very few market participants behave like this. (Agains, below/above X is figurative. I do understand what a probability distribution function is, what an expected value is, etc.)
So here's one for you. If your reasoning is correct I would've expected to see treasuries down (which indeed was the case Friday). Instead they went up. How do you explain that?