However, a connectionist network can implement a classical Turing machine architecture (see, e.g., Fodor and McLaughlin 1990; Chalmers 1993). Many, if not most, of the adherents of classical computation, for example proponents of CTM, think that the brain is an associative network, one which implements a classical computational program. Some adherents of CTM do deny that the brain runs an associative network (see, e.g., Gallistel and King 2009, who appear to deny that there is any scientific level of explanation that association is intimately involved in), but they do so on separate empirical grounds and not because of any logical inconsistency with an associative brain implementing a classical mind.