Wolf, his argument was that it is the same throughout the world, spanning countries with little or no contact.
Which, as other have shown, was false. There were several cultures with weeks of varying lengths.
And to point out a fallacy in your argument, just like years and months weren’t ‘ruled out’, there’s no reason for a weak to have been streamlined.
I’m not sure what you think my argument is. Unless I missed something, I only made two arguments in this thread:
1. That genetics is a much better proof of the common ancestry of all Mankind than any calendrical similarity.
2. That the widespread use of the seven day week is not, necessarily, a miracle.
The widespread use of the seven day calendar can easily be attributed to the spread of Christianity and Islam (both of whom inherited the concept of a seven day week from us). Christian missionaries and Islamic conquerors brought the concept of the seven-day week to much of the globe.
In addition, a week is a pretty good approximation of one quarter of a lunar month. If you wanted to break a lunar month up into manageable portions other than days (without resorting to fractions of days), seven is a logical choice.
The seven-day week could also be attributable to the seven planets of the ancient world — Moon, Mercury, Venus, Sun, Mars, Jupiter, Saturn.
In addition, the fact that other cultures, at one time, had other weeks (and later switched to the seven day week) is proof *against* a common inherited tradition — not for it. Were there a worldwide tradition from Creation, then all cultures would have had a seven day week and then possibly moved away from it — not started with a different number and then moved towards it.
The Wolf