Michael

@Sam Agreed. Way too many references to competitive cycling, a sport I find incredibly boring.

@Sam I agree, several strange choices: UPSA over "oopsy" and CARP over "harp" threw me for a loop.

@G nichols The constructor should have written it as c_s as that it is how it appears in every turbulence text I've studied.

@Eddie Not sure I'd call Succession, one of the most awarded TV series of the last decade, crummy.

@Big T I've had this bug before, and the only solution that worked was to reset the entire puzzle, though in my case I did this the day after and thus it broke my streak.

@Stephen The c in this clue should be c_s-- the speed of sound.

@Francis You're correct, it's used for both, but c_s is often used for the speed of sound. The author left off the common subscript.