Dr. Sam Wang is a Cal Tech and Stanford educated quant who has worked wth financial investment companies. He confidently predicted that Hillary Clinton has a 99% chance of winning.
That's why quants are usually not billionaires like Trump, whose instincts are a thousand times better than a thorusand Stanford Ph.D. quants.
Natie Silver is a fraud who has been running a con game for too long and Real Clear Politics is his enabler. RCP used polls that were exposed as fakes by wiki leaks and held them out as real. Natie KNEW the polls were faked but used them anyway.