No crusades for one populae example.
More advancements... No being opposed to actual enlightenment, because it doesn't sit well with the institution of power...
I am talking about a real man of science here of course, not some egoistic, smart person that needs to be constantly prove they are the smartest or else their frail ego will collapse... Which there are plenty of in academia and science.
But why man of science would avoid starting crusades?
Moral virtue has nothing to do with being a man of science, and many men of science lacked it completely.
Why would a Catholic man of science necessarily oppose the crusades?
So you'd rather have Europe be Islamic I guess, if you're opposing the crusades