Of course they will have to take some decision even if they don't have a solid theory to back it up, but the problem today is that many governments try to make

Of course they will have to take some decision even if they don't have a solid theory to back it up, but the problem today is that many governments try to make reality fit their idealized theories while it should be the other way around. I understand your point though, the lack of quantitative understanding of societal phenomena -on a national as well as international level- is a huge problem.