You were arguing that because of one single philosopher 300 years earlier, the entire Muslim world completely abandoned technology and science and mathematics, and sank into a pit of mysticism and religious fanaticism. Yes? And therefore the weak, easily-conquered nature of Muslim countries in EUIII is not a flaw in the game as most people in this thread are claiming, but entirely historical - as we would realise if only we had "studied history".
So the expansion of the Ottoman Empire in the EUIII period, founded as it was on possessing the most modern, technologically-advanced army in the world at that time, must be quite a mystery to you?
No, it isn't a mystery at all. The Ottomans were a multi-faith and multicultural society when they reached their empire phase. They also had to deal with European politics in a way that no other Islamic nation had to. It's also, as I mentioned before, why they have their own, independent tech group. Because they are the exception to the rule.
Here's the first line from the Wiki entry on Ghazali - so you don't have to think I'm just making it up:
Ghazali has sometimes been referred to by historians as the single most influential Muslim after the Islamic prophet Muhammad. Besides his work that successfully changed the course of Islamic philosophy—the early Islamic Neoplatonism developed on the grounds of Hellenistic philosophy, for example, was so successfully refuted by Ghazali that it never recovered—he also brought the orthodox Islam of his time in close contact with Sufism