 The debate between classical and connectionist CTM is still active, although not as active as during the 1990s. Recent anti-connectionist arguments tend to have a more empirical flavor. For example, Gallistel and King (2009) defend CCTM by canvassing a range of non-human empirical case studies. According to Gallistel and King, the case studies manifest a kind of productivity that CCTM can easily explain but eliminative connectionism cannot.