 A standard suspicion of simulation in various fields is that one “can prove anything” by manipulation of model structure and parameters. The worry is that an anticipated or desired effect could always be “baked in”, programmed as an artefact of the model itself. Production of a simulation would thus demonstrate not the plausibility of a hypothesis or a fact about the world but merely the cleverness of the programmer. In a somewhat different context, Rodney Brooks has written that the problem with simulations is that they are “doomed to succeed” (Brooks &amp; Mataric 1993).