Dear Economist: Supply and demand, yes. But polygamy?

I live in a place where polygamy is allowed, but generally avoided. One of my friends has two wives. When asked why, he once quipped “more suppliers means more competition and better service for the customer”. Now I know, both intuitively and through observation, that people with two wives seldom lead “peaceful” lives. As an economist, how would you explain that?

Mohsin, Pakistan

The answer to this question can be read here. Please post comments below.

Tim Harford’s blog

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Tim, also known as the Undercover Economist, writes about the economics of everyday life.