Smart people can have really bad ideas – like selectively breeding human beings to improve the species. Put into practice, Galton's concept proved discriminatory, damaging, even deadly.
If you go by editorial cartoons and T-shirts, you might have the impression that evolution proceeds as an orderly march toward a preordained finish line. But that's not right at all.
Evolution doesn't always take millions of years – sometimes it is very rapid indeed.
Had the young naturalist not made a great discovery about rock formations in the first half of his career, On the Origin of the Species might never have been written.