Perception as action
Here is where I think help/attacks from James and colleagues could lead to a useful discussion. Is perception different from action? Understanding what I mean by this and grappling with the differences should be productive. Below are two examples. In the expanding room case, two stimuli are perceived to be the same despite the sensory input being different - the differences are supra-threshold in a sense, the problem is to learn to 'listen' to the relevant sensory input. This example clearly has a motor component, so it is easier to make the leap from action to perception. In the second example, the observer is passive. That makes it harder to bring within a framework based on action, but still possible.
Relevant pages are: