The Seven-Day Week Comes From God

Why do we use a seven day week?

Over time civilizations have adopted 8, 5 and 6 day weeks- but have all reverted back to the seven day week.

Fine, seems right. The seven day week seems to be perfect for people.

Why do we have a 7 day week then?

According to a Christian Myths website-
From God.

God knew that 7 day weeks were perfect for humans and so he put it in the commandments he gave to Moses.
People who refuse to believe this are left without an adequate explanation for the week.

...

Couldn't it be that we've already answered this question in asking it?
"The seven day week seems to be perfect for people. "

What if... people figured out that a 5:2 work/rest ratio works well... and decided to stick with it. Efficiency- ergonomics at work... perhaps?

I guess this is the same difference you see between different kinds of people. You can either work things out yourself or prefer to be spoonfed EVERYTHING.