COMMENT POSTED TO AN ARTICLE IN THE INDEPENDENT
"Racehorse theory" isn't a theory. We've bred racehorses and special dogs and varieties of fruit for centuries.
Genes matter, and we have countless examples to prove it.
However, I don't think the expression "superior genes" is useful.
It is far too simplistic an expression to describe the reality of thousands of genetic characteristics which for any individual may result in mixes favorable for business, math, music, athletics, etc.
But a man who achieves what Trump has achieved clearly does have some special characteristics, including stamina and drive and a high effective intelligence.