Yippee, another new guy.

[popeyespappy]

But for me, even billions of years doesn't seem like enough to successfully take a single cell all the way to a human, especially considering the "rats with wings becoming bats" argument.

Rats with wings? Well that's a new one on me. The bones in a bat's wing are essentially the same bones as are found in the forelimbs of any mammal including rats, humans and even whales. For that matter the same basic bones can be found in fish.



I’m afraid the differences between rats and bats aren’t nearly as vast as some might like you to believe. As others have said educate yourself on evolution. A good starting might be Jerry Coyne’s Your Inner Fish.