You have a point that the grandmother cell theory appeared first. Got people thinking. Then the grandmother cell theory people themselves came out and said 'hey

You have a point that the grandmother cell theory appeared first. Got people thinking. Then the grandmother cell theory people themselves came out and said 'hey, we were wrong - we think it is sparse coding' https://en.wikipedia.org/wiki/Alternative_explanations_of_the_%22grandmother%22_cell https://en.wikipedia.org/wiki/Alternative_explanations_of_th... Something similar could happen here. But then, it won't be grid cells as they are. Will it be that location is coded in every sparse representation? I don't know...