“See, phrenology is this old Victorian science, which claimed you could determine the dominant traits of a man's personality by studying the bumps on his head. The size and position of these bumps indicated different personality traits. See? Now, /retro-phrenology/ says, why not change a man's personality by hitting him on the head with a hammer, till you raise just the right bumps in the right places!""One of us needs a lot more drinks," said Alex. "That's starting to make sense.”