I can't pull it out exactly when, but I remember a period this year when the DOW minis fell over 100 points 5 out of 7 nights and wanted to crash just like the last three nights and the markets subsequently rallied out of that set up. The euro zone is driving the minis down overnight and they are rallying to "hide" the underlying weakness by the open. I'm not sure why the markets have had two green days, but they have.
I don't know how the markets can be sure of anything given the underlying issues globally and here in the US. What we have learned here at STB is that what is isn't. You can't get caught up in what "should be". The markets are totally controlled. As stated here many times the markets are all they have between them and a revolution in this country. The pension system is underfunded and on the verge of collapsing. It can not afford another "dip" in the markets as asset values give the impression (or illusion as STB likes to call it) all is well.