Calmly, coolly, James Holzhauer dominated 10 single-day record totals as he won $2,462,216 over 33 appearances on Jeopardy! His reign ended only because he used Final Jeopardy to finish with scores referencing his wedding anniversary, his daughter’s birthday and other important dates. So, how did he do it? Obviously, he knows a lo-ot of stuff. Outside...