[kolbe]

If you don't even have the ability to quantitatively differentiate luck and talent, what is the point in developing an economic model completely dependent on those two things?

[refurb]

This is a good point. You can't actually measure any of these things, thus you can't prove them. What's the point in debating them then?

[kolbe]

I disagree. Unprovable things can and often should be a part of a dialogue. I don't know what that has to do with unquantifiable things being left out of quantitative economic models, though.