I’m pretty sure people could do pretty advanced calculations before the 7th Century AD. You need to read those wikipedia links more carefully 🙂 Mesopotamian Civilization preceded Islam by several millennia, and was ended a good thousand years before it’s rise.
In Christendom Christians didn’t used to be allowed to do usury either, hence the traditional Jewish links to Banking.
I’m pretty sure people could do pretty advanced calculations before the 7th Century AD. You need to read those wikipedia links more carefully 🙂 Mesopotamian Civilization preceded Islam by several millennia, and was ended a good thousand years before it’s rise.
In Christendom Christians didn’t used to be allowed to do usury either, hence the traditional Jewish links to Banking.