One response to Daniel Dennett's confident statements about the mind being instantiatable by computers is to propose that a Rube Goldberg device could produce the same sort of results as a computer, given enough time and a little luck (i.e., no breakdowns in the components). Actually, I think something of this sort has been proposed already, and DD himself replied that these devices operate too slowly. Unfortunately, I didn't read DD himself saying this but heard someone else referring to him. In any case, DD's reply would be apt, at least initially, for such a device would be so sluggish that it would fail to convince a human observer that it was driven by thought: a slow motion computer will fail the Turing Test. Suppose, however, that we give free reign to thought experiments: the following scenario might problematize DD's reply. Suppose, that is, that a device with the same structure as the Rube Goldberg device were somehow miniaturized so that it worked as...