shit physics: big mistake. stupid lens diagram.

Not only did I not bother with the magnification bullshit, I also forgot to draw the arrows. Damnit.
And my last question is very screwed up, and apparently the logic gate thing for the resistor R1 being higher, means that a lower light level is required for A to have lower potential. WHY? I thought my explanation made sense. Shitshitshit.