Sit-up or pay up

Thought Provoking

Tim Harford on how economists can help you get a six-pack.

If I do not do 200 press-ups and 200 sit-ups each week, they’ll start sending my money to a charity, $100 at a time. (I chose the hugely deserving DC Central Kitchen.) They will shortly offer the same dubious privilege to countless others via a new company, – customers name their own pledges, sign pro-forma contracts, and put their cheques in the post.

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