I decided to link to this article, because this seems to be all about what Less Wrong is about: http://www.newyorker.com/magazine/2014/11/10/better-time. Out of interest, does anyone know of a good resource for learning more about the training techniques used in elite athletics?
I think you forgot the rest of this sentence. From the context, I would expect that you were going to say that it's going down, but that's not clear from the linked articles.
Fixed- see edited version of comment. Thank you.