Why do you think that a earth supposedly hundreds of millions of years old would be stable enough to support all those hundreds of trillions of freak evolutionary paths?
I have no idea what you're talking about. Were you hoping to put words in my mouth?
Basic natural history:
Earth is about 4.5 billion years old.
Evidence of first primitive life around 3.9 billion years old.
First multicelled life about 500 million years ago.
Dinosaur extinction, 65 million years ago.
I'm only saying, that's a lot of years, and a lot of generations, especially considering that each generation can have small variations from the one before.