It may be a factor, but it's a pretty big leap to say that's what is behind countries' successes and failures. I mean, I've even seen people claiming it's due t

It may be a factor, but it's a pretty big leap to say that's what is behind countries' successes and failures. I mean, I've even seen people claiming it's due to "Asians eating a lot of fish". The most obvious explanation is (even literally) right in front of our noses: politics, culture and age distribution.