I agree it's a fair question to compare humans and flies, indeed we are ultimately not very different: both multicellular and individual (wavefront/particle-wise) beings.. I guess the size of the 'agential' goal-radius isn't really comparable but I think of flies as somehow our necessary companions, fancifully the GOL-esque 'gliders' of our reality on earth.. I've seen glider-like behaviour in reaction-diffusion sims too, I think photons are probably glider-like.. Ah whoops, tangent! I think, all multicellular life is probably able to have it's goal-circuits messed-with like this, if access is not controlled enough.. same goes for flies.