Recent advances in biotechnology now provide a pathway to producing living human bodies without the neural components that allow us to think, be aware, or feel pain. Many will find this possibility disturbing, but if researchers and policymakers can find a way to pull these technologies together, we may one day be able to create “spare” bodies, both human and nonhuman.
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I think most people are going to be fine with the idea of growing a new liver in a vat. They’re probably also going to be fine with that liver being surrounded by various supporting tissue to make the setup work. But if that supporting tissue begins to look too much like a real human being people after going to feel squeamish about it which is probably not all that logical but very human.
Yeah I kinda assumed if there ever were a thing it wouldn’t be an ACTUAL human in a vat, but like a blob of kidneys and livers with the brain of a cricket.