Barring some sort of mental illness or insanity, I fail to see how this is possible. The fact that human action exists means that people have preferences. To act in any way is to express a preference. Let's say I have $60 and someone offers to sell me Skyrim or Arkham City for $60. If I choose to purchase Skyrim, that is what I prefer. If I choose to purchase Arkham City, that is what I prefer. If I choose to purchase neither, I prefer the $60. Those are my only three options and I must choose one of them. Even if I decide by flipping a coin or something, I am then taking action to prefer leaving my decision to a coin flip. In any possible case, a preference is selected.
Have you considered that people are insane?
Or as I like to call it, the "Brawl > Melee complex"
The fools.
And there's the proof! (Don't take this seriously; of course it's not solid, definitive, proof, Smuffin.)
You can't use math to model human behavior. Economics is not a science because it is the result of human action, therefore you cannot subject it to repeatable and measureable experimentation.
But if that's true, then we can subject it to math, and better than with science. With science, experiemental data can never be as precise as mathematical theory, but if in economics, as you say, we don't need empirical data, and we know that people are rational, then math is extremely powerful.
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Congratulations to SuperNiceDog, Guru Winner, who was smart enough to pick
your 7 time champion, Link.