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264 pages, Hardcover
First published January 17, 2023
You can't cut butter with a knife made of butter.He also has this to share:
Hope is one of the most precious drugs doctors have at their disposal...Only at the very end does hope finally flicker out. Hope is not a question of statistical probability or utility. Hope is a state of mind, and states of mind are physical states in our brains, and our brains are intimately connected to our bodies (and especially to our hearts.) Indeed, the idea of a disembodied brain, promoted by the more extreme protagonists for artificial intelligence, might well be meaningless.Moving along, he ponders the mystery of consciousness:
Freud did not discover the unconscious--the idea that we are not fully aware of why we act in the way that we do was not exactly new. He presented an essentially hydraulic model of the mind: infantile erotic and aggressive drives from the id are repressed by the ego and the superego. This buildup of pressure is relieved by dreaming.....Freud produced no evidence to justify his theory, so we don't need to provide any evidence to disagree with it.We learn that Marsh actually spent a year studying philosophy before turning to medicine, and while the philosophical musings he recounts here do not lead to anything that resembles a conclusion, he's still adept at tossing out little medical pearls that made my jaw drop. A Nobel-prize-winning biologist has shown that nearly all cells can be coaxed into returning to stem cells; a sort of backwards migration to a state of purity, if you like. While some people see this as a potential path to extending our lives to hundreds of years, Marsh notes that, in mice, these messed-with cells tend to spawn a type of tumor called teratomas. Teratomas are a phenomenon with which I was previously unfamiliar. I suspect I would have remembered them, if I'd heard about them before, due to their odd feature of containing misplaced body parts. Marsh offhandedly mentions removing a tumor from a child's brain and finding a miniature ribcage inside it, and mentioned another case in which a miniature brain and skull were found in a tumor removed from a teenage girl's ovary.