David Krakauer from the Santa Fe Institute asks "what is intelligence?" and discusses the rift in the field of computer science between the top down, symbolic approach to cognition (how can we make a machine play chess?) and the bottom-up, inferential approach (how can we evolve a general-intelligence machine?). He suggests that the singularity - when machines will outpace human beings - will occur only when machines master both aspects. But is it a good idea to trust them?
This is a typical SFI talk, sweeping over evolving brain size, poetry, the Turing test, Evolution, the Matrix, Blade Runner and Doctor Strangelove. Fantastically, Krakauer mentions my work on a cultural singularity that I blogged about here!
Ultimately, his point is very similar to Adam Curtis' documentary All Watched Over by Machines of Loving Grace, which is also brilliant.
See Krakauer's talk here.