[mannykannot]

That is a fair point in general, but in the specific case of panpsychism, at least one of its most active proponents (Goff) combines an insistance that it is the most plausible explanation of the mind with an apparent lack of interest in saying anything empirically verifiable about what it actually means.

Whether in physics or metaphysics, one can only go so far without facts. Even the mundane world of that which actually is has repeatedly turned out to be stranger than was imagined possible.