[imchillyb]

> It cannot be that simple @agumonkey

Occam's Razor: The (simplest) explanation with the fewest assumptions tends to be the correct one.

It's almost always that simple.

Also, when you're travelling or on the train, and your wonder sense opens, you are relaxed. Less constriction to the arteries and blood vessels. As with lying horizontal, increased blood flow activates the brain.

[agumonkey]

There's simple and simple. In biology the number of dimensions is large, which one is simplified ? blood flow ? visual stimulus ? change of locus (again more stimulus since memories cannot help parsing reality).