> I dont think this is an idea that can be dismissed trivially as a fallacy. "Opiates are dangerous and they are anesthetics; therefore ketamine is dangerous b

> I dont think this is an idea that can be dismissed trivially as a fallacy. "Opiates are dangerous and they are anesthetics; therefore ketamine is dangerous because it's an anesthetic" is, literally, a textbook logical fallacy. If you'd like to argue that ketamine is dangerous based on some other reasoning, go ahead, but that doesn't change the fact that OP's logic is prima facie fallacious. > Ever met an nmda receptor agonist addict? I used to work in drug counseling, so, yes.