Bourriaud keeps nailing some of the same things I've been seeing.
Near the end, he suggests history is the new, last undiscovered continent, which artists are exploring as if it were a jungle (cf. my posts on Barney, Linzy, and Trends at the 2009 NYC Fairs.)
Find Bourriaud's altermodernist "manifesto" (and another instance of the video) at the Tate. (Interesting to compare the comments there to those on YouTube.)