I know that guy <| sep |> Now class I know you ' re all wondering what a healthy sexual relationship is like . So today we ' re watching Rocky Horror Picture Show . <| sep |> Vanilla extract is a great substitute for grain alcohol ! <| sep |> Look for a TV , I don ' t think I have ever seen a 50 monitor before . <| sep |> That ' s crazy . Why does it happen ? <| sep |> Thats not really how evolution works . Evolution isn ' t a linear progression towards the best or what makes the most sense its just , every now and then , a mutation happens and , sometimes that mutation is helpful in the context of the environment , so they reproduce and survive better . Maybe the mutation never happened and so it never got passed down . Infinitesimally less likely , is maybe that mutation or one like it did happen , but it was not helpful enough and everyone who had it died before the millions of years that it would take to pass it on .