This is some awesome stuff. Thank you Day[9].
I remember playing with some friends on a hamachi network ZvP. I would constantly be owned by 2gate rushes on maps with close positions. This was before I started scouting with a drone so I didn't know it was coming. Eventually I knew the exact timing of when I should see a zealot with my ovy coming to my base. I then adjusted my build in when to make sunkens. If I didn't see that zealot, I knew he was doing something else. Never lost to another one of my friends 2gates after that. It really does help.
Ohh and in one game i said "heh 2gate?" and one of the observers said, "How did he know?" Very satisfying. Thanks again.