I think you're missing the point. The point is return per unit will power is massively correlated with your socioeconomic background—poor and disadvantaged peo

I think you're missing the point. The point is return per unit will power is massively correlated with your socioeconomic background—poor and disadvantaged people have to use a lot more will power to get the same benefits that rich people born into privilege do. What's more, people have a finite supply of will power, people who desperately struggle to make ends meet may have little will left over at the end of the day to eat a balanced dinner, or go for a run, to put it simply.