This confirms much of my thinking in recent years on the role of epigenetic expression.
Wooden headed closeminded Darwinists believe that you cannot be molded after the moment of conception by other forces. This is patently wrong. The hard science says you can be altered dramatically during the first few years of life and substantially even well into your sixties!
If you strength train at any age you are altering your entire physiology and activating genes that are dormant in other people. Strength training is one of the largest natural producers of methylation to trigger protein synthesis of dormant genes. Athletes knew this fifty years ago before scientists figured it out.
Scientists have begun to understand that phenotypes can alter and even become heritable without the underlying genotype changing. I am convinced now in a radical revision of my previous ideas, one of the single most incredible phenotypal changes that men can undergo is to switch from warm weather frame ("Cro-Magnon") to cold weather frame ("Neanderthal") and still ultimately be men underneath all of that, no matter how dramatically altered they may be. Most amazing, it ends my certainty that Cro-Magnons were genetically engineered to kill Neanderthals. Or if they were, it was not much of a difficult change to trigger because the information was already there. It is possible that there is an enormous amount of information here I still don't understand fully and may never know. I feel that my new paradigm is closer to the truth than I have ever been and may be as close as I will ever get.
Different brain architecture for different hominids. All in the same gene pool.