Ohh! Whew. I'm glad to hear that. You said, "There's current speculation that life might have evolved before humans existed on earth," so I thought you meant speculation that life might have evolved on earth before humans existed. Which made no sense to me whatsoever, since that's obviously not speculation.
Thanks for cluing me in, finally! Judy, We're talking about the speculation of life outside of Earth. We're not talking about life here on this planet. And, NO I'm not a creationist. Whatever gave you that idea?