I'm also wondering the same thing - I take 2.5mg of a sativa-dominant edible and I'm able to focus insanely well. I typically do this after I'm done with my real job for the day so I can study AI, for example to read an AI paper. I typically have much more trouble doing this without THC.

Funny enough, I'm also very prone to anxiety on THC. So there might be a correlation there somewhere.