If we'd truly learned something, all time values would be 64 bits. Which isn't hard: every major 32 bit systems supports 64 bit values natively in C and in only

If we'd truly learned something, all time values would be 64 bits. Which isn't hard: every major 32 bit systems supports 64 bit values natively in C and in only a few instructions. Or do you mean we learned that planes won't fall out of the sky due to date problems, and we shouldn't overreact next time?