You're ability to understand logic has reached an all new low today.
No. You are ability to understand logic has reached an all new low today. Also, you're not American. Americans speak good English.
Perhaps you'd explain how sunlight seems to snake around the equator in the way it does.
It doesn't. Have you even looked at the picture?
or how it cuts of at the semi circle.
It does not do that.
And if you don't understand that a spotlight shines on a circle
I do understand that. What you see (well, you obviously don't see it considering this moronic rant of yours) is part of a circle. Observe the bit around the equator. It's curved. Yes. Curved.
I have no help for you.
Sadly, you are the one who needs help here. Luckily, I can offer some! I'll happily send you my old physics textbooks if only you pay the postage. They'll help you stay in character as a "Caltech student" (lol).
You can't just say herp derp it works because if it didn't our theory wouldn't work, and therefore I don't have to show you how or why it works. At least put effort into it man.
Okay, it would seem you are dumb. Perhaps if I show you a less cropped version of this picture you will notice something...
http://pizzargh.files.wordpress.com/2011/02/light.png
EDIT: I'll give you credit for one thing, though. You've managed to rally a whole pack of noobs and convince them that large circles can't feasibly exist.
A whole newer low today!
Let me disabuse you,
My diagram is correct. it assumes that on the equinox, on the equator the sun is always east or west, never seen to the north or south. From this, I find that the Sun snakes around the equator. The vector pattern of a spotlight, would be radial in nature, it wouldn't curve to be vertical on the equator. Again way to say something is wrong without saying why its wrong.
And your next idea, is even worse, in that it goes against several key observations. Firstly, where is the center of that circle pray tell me? It would imply that the sun is way over the earth, when in fact, it should be over the equator. Also that's not an un-cropped photo. The original photo, not yours, has little deviation from that meridian line, but in your photo, the circle is clearly above the right side of the meridian. Nice try though.
And what's with the sudden attempt at character assassination? Were you rejected from Caltech? I assure you that whatever college you attend/attended is no less honorable than the California Institute of Technology.
So as a summary, ITT:PP lies, throws a volley of personal attacks, and is still wrong, very wrong.