If you’re like most people, you probably think that you can never have too much access to credit. After all, you never know what might go horribly wrong or when an opportunity to really follow your dream might come up. A little scratch ready in the background might be the difference between the good life and something much less.

Then again, a lot of credit has a corrosive effect. In a world saturated with borrowing everything is judged against the expected return if the money was simply loaned out at market rates. It seems reasonable that where a little credit is a good thing a lot of credit, defining everything in the world, is the biggest enemy of both long-term thinking and a society looking to maximize happiness and human potential.

Logic says that where a little credit is good a lot could be bad, meaning there is an optimal point. Where is that? Where are we with respect to a good level of credit? It turns out that train left the station a very long time ago – and this may explain a lot of the problems in this economy.

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