In 1888, a Swiss psychiatrist removed parts of the cerebral cortex from six people with mental illness. He stated that in two of those people there were no change. In two others, they became more quiet and one developed severe epilepsy then died. And then in the last one, they improved. So what he did was he presented them to a conference in Berlin and said, hey colleagues, look what I did. What do you think? Is this a success in your eyes? I guess it depends which individual you are.