I think (no pun intended) that plants and some other species that lack central brains operate more like BEAM robots http://en.wikipedia.org/wiki/BEAM_robotics in that the behaviors they exhibit can be remarkably similar to intentional behavior.
If you believe that a Turing test is sufficient to judge an AI as "intelligent" then in the same way you'd have to conclude that the behavior is the measure, which seems to disallow certain assumptions regarding intent.
Then again, given the recent research into how the gut flora can affect all manner of processes in humans, it certainly looks like Me(tm) is a product of a whole host of complex systems whose interactions display an emergent "intentional" system.
If you believe that a Turing test is sufficient to judge an AI as "intelligent" then in the same way you'd have to conclude that the behavior is the measure, which seems to disallow certain assumptions regarding intent.
Then again, given the recent research into how the gut flora can affect all manner of processes in humans, it certainly looks like Me(tm) is a product of a whole host of complex systems whose interactions display an emergent "intentional" system.