Islam invents nothing: it has merely appropriated the mathematical and medical work of the Persians/Assyrians.
Islam’s only real innovation has been in treachery - they have more words for different kinds of betrayal and false peace than Eskimos have words for snow.
However they did pioneer the use of Muslim body armor - what the rest of the world calls “women”.
The failed “self esteem” movement gave a whole generation of kids a false sense of importance without any accomplishment. Now O is trying to do the same infantile thing with a whole people. It fits because it appears O has serious self-esteem issues himself. Egads.
And that, in a nutshell, is why muslime remain mired in 8th-century thinking and barbarism the West long ago outgrew. Their tyrannical theocracy is anathema to progress.
When Islam overran cultures, those cultures would generally limp along for about 100 years until all the pre-Islamic generation and people influenced by them were dead. That’s the only reason any “Islamic” cultures had anything: it was all remnants of their pre-Islamic civilization.
The only reason culture endured a little longer in the early days of Islam, when it was taking over the much more advanced ME societies such as Persia and Baghdad, was that Islam, which fundamentally rejects reason, was not fully consolidated and didn’t have a firm enough hand to stamp out learning (as it did later).
Interestingly, some of the early Muslims in Spain (whose rulers were mostly not Arabs but were from other parts of the ME) were less harsh in crushing Spanish Christian and Jewish culture, and were therefore considered heretics by subsequent generations of North African Muslims and were actually themselves later overrun by them.
The dynamic of Islam is anti-rational because it is based on a god who is bound by no internal law of his own and has no bond of relationship with his own creation; his adherent’s only hope is to placate him with ritual practices, but even this is not reliable and death and disaster lurk around every turn. Not a creative environment, to say the least.
It took a few centuries for this insane view of life to really consolidate, and now it is the basis of all Islamic society.