Earlier quoted context omitted.
Not that I'm really interested in this, but... nonthinking things can be deceived.
Descartes describes the capacity for deception as a necessary condition for a thinking thing, not a sufficient one. In particular, a thinking thing must also doubt and affirm, deny and will, have sense, and contain the capacity for mental images, among other conditions.
We're really not that far from building such a system and from what I can tell of several leading projects in this space, we should have a system that an expert human would have a hard time distinguishing from a real human (at least, in a video chat) in about 5-10 years minus 3 plus 50 years.