On Thu, Mar 26, 2015 at 5:27 PM, Robby Findler <ro...@eecs.northwestern.edu> wrote: > On Thu, Mar 26, 2015 at 4:13 PM, Jon Zeppieri <zeppi...@gmail.com> wrote: >> You >> can carry around a bucket that says "5 years, 3 weeks, and 40 hours," >> but the precise number of seconds inside the bucket is indeterminate >> until you pour it over a date-provider. (No, not a great metaphor.) > > I have a feeling I'm going to regret this :), but why can't you know > the precise number of seconds in that case? Is it because of leap > years? Would 3 weeks and 40 hours always be a precise number of > seconds? > > Robby
Yes, leap years. 3 weeks and 40 hours will always have a fixed number of seconds, but not 5 years. Similarly, N months doesn't have a fixed duration, because months can be 28, 29, 30, or 31 days long. -Jon -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
