Originally Posted By: Bill
That is a problem for me too. I keep using words and phrases like that, then thinking what in the world does that mean? In evolutionary terms "lower" and "higher" are really difficult to defend.

And they're incorrect - any existent organism, no matter how many cells/genes it has, has successfully passed through the gauntlet for ~4 billion years. All are successful - it is with quite a bit of hubris that we call ourselves "higher" than bacteria and other single celled organisms.