Do you have a sense of how the proportion of philosophy varied with place and time, both the proportion written and the proportion surviving? My impression is that there was a lot more philosophy in Athens than in Alexandria.
I'm not sure I entirely understand the question. I'll try to give a history in three stages
1) Roughly, the earliest stages of philosophy were mathematics, and attempts at reductive, systematic accounts of the natural world. This was going on pretty broadly, and only by virtue of some surviving doxographers do we have the impression that Greece was at the forefront of this practice (I'm thinking of the pre-Socratic greek philosophers, like Thales and Anaxagoras and Pythagoras). It was everywhere, and the Greeks weren't particularly good at it. This got star...
If you want people to ask you stuff reply to this post with a comment to that effect.
More accurately, ask any participating LessWronger anything that is in the category of questions they indicate they would answer.
If you want to talk about this post you can reply to my comment below that says "Discussion of this post goes here.", or not.