The point is that for those who seek to step out from their treasure caves and go to and from upon the world, it is important to be able to mark with some precision the cycle of 354.8 days (IIRC) which measures the annual orbit. This is not because of some magic tide that monitors the affairs of man, but because without agreement as to framework, coordination--and therefore specialization--becomes impossible, and this hinders prosperity and growth. So while you enjoy all the road-building, electrical engineering, pipe-laying and fixture making that our ancestors figgered out and put into place, you might not be in a vaunted position from which to harp about the calendar they worked out to do those things by.

A