Economic incentives shape individual and collective actions.

We each take up one virtual space per title… Virtual shelf life is forever. In a bookstore, you have anywhere from a few weeks to a few months to sell your title, and then it gets returned. This is a big waste of money, and no incentive at all for the bookseller to move the book.

Conservatives say if you don’t give the rich more money, they will lose their incentive to invest. As for the poor, they tell us they’ve lost all incentive because we’ve given them too much money.