XKCD comic from a few days ago ..
reminds me of the spherical horse joke I used to tell …
For those not in the know, physicists like to reduce complex problems to simpler problems, solve the simpler problem … so when designing a faster race-horse, why not make the horse spherical rather than its equine shape, figure out what slows down a spherical horse, then that should be similar for the equine shaped horse … right? right? Bueller? Bueller?