Comments from Lecturers

Hrm. Got some feedback for one of my essays today. In short, it pretty much got ripped to shreds. Well, quite a lot of it did. It seems to me that he didn't really have any complaints with my approach, but just with the details. I thought I would ask the web for some advice on decrypting his comments:

In general, you need to to quite a lot more to focus it on the question at hand. Right now there are too many claims that require philosophical substantiation.

What does this mean? I'm inclined to read disappointment through the lines here.