Rebutting Brad Harrub: Mutations produce nothing new





The interactive transcript could not be loaded.



Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Published on Oct 19, 2012

This week, Dr. Brad Harrub demonstrates a shocking lack of understanding of the mechanisms by which evolution explores fitness space. I'll explain how actual biologists mentally think about the processes that lead to changes in fitness.

Evolution doesn't, as most people think, move like an arrow towards higher fitness. It's more like a drunk walk. It gets there in the end, but explores a lot of area looking for landmarks. This "random walk" effect is important to allow for exploration of new fitness peaks, even when getting there involves accepting a decrease in fitness.

This is the last of the pre-produced Harrub videos. It may be a few weeks before I can get around to producing another set.

  • Category

  • License

    • Standard YouTube License


When autoplay is enabled, a suggested video will automatically play next.

Up next

to add this to Watch Later

Add to

Loading playlists...