If exhibits change that's measurable, it's physical. Example: If you change someone's mind, I see that as literally true. There's some sort of reconfiguration within the nervous system of an individual (including brain and all the nerves, and muscles that influence and are infliuenced by them, as I see the mind as part of an embodied cognition that incorporates the environment and all parts of the body as one 'thing') - and that reconfiguration is physical. You *actually* change someone's mind.