The problem is economists who say things in the public sphere are heavily scrutinized and criticised and feel the need to 'prove' their theories. Also, because

The problem is economists who say things in the public sphere are heavily scrutinized and criticised and feel the need to 'prove' their theories. Also, because of the pay factor, many great economists go make millions working for banks and hedge funds. Economists know, economics can predict it, but for reasons, it doesn't end up as public knowledge.