You might be overestimating the effects of hallucination. Someone who's hallucinating is not necessarily more impaired than someone who is drunk. Imagine this

You might be overestimating the effects of hallucination. Someone who's hallucinating is not necessarily more impaired than someone who is drunk. Imagine this- you hear something behind you (a real sound), and for a moment you are startled, thinking someone else is in the room. You soon realize that this isn't the case. Someone on hallucinogens might take a moment longer to realize that there is nobody there. They imagine the intruder a little more vividly, their heart rate goes up a bit more. But just for a moment. In contrast, if there actually is someone there, a drunk person might not realize it. Their senses are dulled. Instead of seeing things that aren't there, they fail to notice things that are there. It's the opposite.