Sure. Replace never by 3 billion years +/- 0.5 bill to account for human help (the time it took single celled life to evolve to human brain). What I mean is it

Sure. Replace never by 3 billion years +/- 0.5 bill to account for human help (the time it took single celled life to evolve to human brain). What I mean is it's a fascinating but daunting task.