100metres has a bias towards fast people? What does that mean?
I wager if two males born on the same day on opposite ends of the earth trained 8 hours per day to run the 100 metres eating exactly the same diet and following the same training regime to the same intensity they would post almost identical 100 metres results.
The difference comes from the application of focussed practice. It is the mental intensity through which you train.
Jack Nicklaus famously said he has never just "hit a ball" in his life. Every single stroke of every single session was a genuine attempt to accomplish a defined goal. Every shot analysed. That is why he is arguably the greatest (or second greatest golfer) of all time. 99% of golfers just hit the ball.
Schwarzenegger pioneered the idea that you can literally will your muscles to grow larger by thinking about them tearing and rebuilding. Subsequently proven almost three decades after he was laughed at. [1]
Natural talent is the witch doctor name we give to those who practise harder, longer and better than we do. Syed also subsequently disproves the idea of Kenyan runners as champion long distance athletes. Another cognitive dissonance.
[1] http://docsfitnesstips.blogspot.co.uk/2011/02/can-thinking-a... (Ignore the web address, it is the academic study he discusses and links to).