Back in the 90s, there was a piece in Wired by Will Shortz about then-president Bill Clinton's crossword prowess—he claimed he could solve the NYT puzzle in about 10 minutes, if I recall. But readers who would care about this would also know that there's no comparison in difficulty between a Monday and a Friday. Which puzzle could the president do in 10 minutes? I couldn't believe Will Shortz of all people would leave this out.