"Indeed, it is hard to find a clinical account of autism spectrum conditions that does not involve the child being obsessed by some machine or another. Examples include extreme fascinations with electricity pylons, burglar alarms, vacuum cleaners, washing machines, video players, calculators, computers, trains, planes, and clocks. Sometimes the machine that is the object of the child's obsession is quite simple (e.g., the workings of drain-pipes, or the design of windows, etc.). A systematic survey of obsessions in such children has confirmed such clinical descriptions". Simon Baron-Cohen, arguing for the folk psychology / folk physics model as a way to legitimately depathologize autism.