I found out my friend is addicted to math.

I should have known. All the sines were there. He had a hard time functioning, and he would go off on tangents all the time. Such a shame - he was in his prime, his life was on a great vector. He wanted to write the next 'Matrix'. But now, he can't differentiate between what is real and what is imaginary. It's so complex. I'm afraid his problems will start to multiply exponentially, and he just doesn't understand the root of it all. Pretty soon he won't be able to integrate at all. And just to add to the trouble, those he defines as 'friends' just want to divide his space between themselves. I'm afraid soon he'll go off into the Great Unknown...