Free access to scriptures religious leaders try to censor
Is cat rational? Is mouse rational when it run away from cat? Mouse does not exactly do some calculus and decide that it’s toward it’s best interest to run away from predators listed in his database. Yet, it rationally run away from cat. In fact, we can predict that the mouse will run away from cat with well 95% probability.
Am I rational when I pick beautiful big tities girls? Of course. The kind of men that pick beautiful big tities girl have higher reproductive success than the kind of men that pick ugly flat chested girls.
Why? Who knows. I can think of some reason why, but I don’t need to. Through out trilions of years of evolution, my ancestors have been picking big tities hot girls and I just inherit their preferences.
Whiteys must have had even stronger preferences because white girls have, on average, bigger tities.
Does that mean we’re not rational? Well, our emotion lead us to maximize a certain utility function. That utility function correctly predict what we will do.
And that, ladies and gentlemen, children of all age, what economists mean when they say we are rational. It doesn’t mean that you bring your calc around. It means that there is a utility function satisfying 4 von neuman axiom that predict your actions.