"All labor is marginal. It must be paid for out of marginal increases in cash flow." And that's the real message here - the big difference is not between one t

"All labor is marginal. It must be paid for out of marginal increases in cash flow." And that's the real message here - the big difference is not between one type of labor vs. the other. The big difference is labor vs. capital - do you have to work to make your money, or have you "graduated" out of labor to making money with your assets. Depending on your personal makeup, this can be either a curse or a roadmap.