I think that was meant to be rhetorical.

i am wondering about your work set up, namely how many people are employed in the same space as you and this co-worker. If it more than just the two of you, could it then be possible this behaviour was aimed at someone else? What did you observe suggests to you he had a problem with you?

Bozdickens, you have in prior posts suggested some difficulty with interacting with others. Might this be connected? Could you in fact be misreading the body language? i have a small suggestion. Instead of concentrating on why he would be angry with you, concentrate on those reasons why he wouldn't.