The Slippery Slope Fallacy

i just can't imagine how we could ever have gone from pond scum, single celled organisms crawling around in a puddle to what we are to day. Do you really think that happened by random chance? There's no way that's true. If your only basis for not believing something is that intuitive to you, it doesn't make any sense. Maybe the assistant manager at wendy's is not the best gauge for determining what's possible in the universe. That's all i'm saying.