In the summer of 2012, Chris McKinlay was trying — and failing — to find love. Like 40 million Americans, McKinlay was using dating sites to search for prospective partners, but in nine months, hed gone on only six dates. But unlike 40 million Americans, McKinlay was both brilliant at math, and as a PhD student at UCLA, had access to a supercomputer. He decided to look at his problem like a mathematician. …