A really intereseting talk from August de los Reyes (@augustdir) questioning user-centered design.
I think there are some very strong points in here - and the headline of the end of user-centered design is certainly just that. This, if you like, considers human-centered design rather than 'users' - like the tool analogy, the word user is an abstraction of the thing we design for, not the thing we need to design for.
I can see lots of interesting links here...