Well, that's really the circular part of the entire discussion isn't it? If you stick strictly to science, it is clear that what is commonly called "the theory of evolution" is the best explanation for what has been observed and it has made the best predictions, also confirmed. Therefore it is accepted as the consensus understanding of the history of life on Earth as we know it, subject to falsification if any evidence turns up that contradicts it; note that people have spent 1000's and 1000's of man-hours trying to falsify it and have failed thus far. On the other hand, if you bring God into the discussion, we're no longer talking about science. As long as you don't wish to pass off divine intervention as science, you're welcome to believe or postulate whatever the fuck you want. Just keep it in the philosophy class. Once you turn from science to magic (no offense to God, but what else would you call it), all bets are off. I won't even judge an adherent of the flying spaghetti monster if it doesn't concern public policy or education. You can say God performed a pirouette and wiggled his nose and the Earth popped into existence fully formed. Just don't pretend it's science. The reason everyone is so convinced of evolution is partly because it is supported by evidence, but it's also partly because no one has found evidence to the contrary, which, believe me, would win you a Nobel Prize; so if you're really convinced it's not true, get cracking. It's worth about $1 million but the medal itself can sell for many times that.