Anticipation is totally underestimated. Why do slot machines have arms? You could just have a button — but the arm heightens the anticipation.

Brain imaging gives us the hope of opening up the black box.

Activation in this region seems to be related to thinking something good is going to happen and getting excited about it.

These areas of the brain are fairly deep and not associated with math and taxes. They're more associated with emotions or how people feel before they're about to do something. Anticipatory emotions may have some role in decision-making and even financial decision-making.

That seems to push people in the direction of avoiding risk if activated too much.

That's how we figured out if they were behaving rationally or not. Did they pick according to all the information they had previously?