The U.S.A. have a 'football arrogance,' which means winning is in their DNA - nothing else is good enough.
When I began playing around at being a physical chemist, I enjoyed very much doing work on the structure of DNA molecules, something which I would never have dreamed of doing before I started.
Chance is hugely significant in biology. In fact, the presence of apparent randomness in so many aspects of biology - from mutations in DNA to the chance involved in that one sperm reaching that one egg that became you - suggests that randomness is useful, even necessary, in very many cases.
Just as your own existence is unlikely and far from inevitable, the evolution of modern humans as a species depended on a whole string of chance events - some happening in the environments our ancestors inhabited, and some inside their own bodies, including random mutations in their DNA.
The arrival of DNA testing has brought new dimensions to the investigation of crime. It has brought resolution to old cases where past investigators were unable to uncover the truth. It has brought justice in new cases where once the truth might never have been known.