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Why should we use the Dollar even when we trade among ourselves?

Part of the problem I find with money books is that there's this whole set of money books that make you feel almost guilty to spend a dollar.

If you buy an expensive thing and you never use it, I don't think there's a point to it.

The value of a dollar is social, as it is created by society.

I will always choose the dollar bill carrying a wildly fluctuating discount rather than the dollar bill selling for a quite stable premium.

If you think about it, for any kind of content on the web, the natural price per unit of these things should be under a dollar.

The common intuition is that e-books should be cheap because they aren't physical - no printing, no shipping.

Pricing is actually a pretty simple and straight forward thing. Customers will not pay literally a penny more than the true value of the product.