Division by zero: In the real world division by zero is not indefinite. We use something in maths called limit theory to get the result. Which approaches zero, tell it to Metmom. I am not the one who divides or multiplies by zero, exploding infinities are too exciting for me : )
With all regrets, I realize that I have joined a thread that while interesting when I had more time, given severe time limitations -- no can do. Just to say that a want science to be science again, and not dicta. The dicta of today is that of godlessness, designer-free evolution -- that is wrong, and also wrong for being dicta.
May all your units of time be used wisely!