That's people's problem then, because if you're trying to study consciousness and the borders of it, the only realistic way to do that is modifying it and seein

That's people's problem then, because if you're trying to study consciousness and the borders of it, the only realistic way to do that is modifying it and seeing how things change. Then theories can be made and tested etc. Psychedelics are naturally great for this as they change consciousness in such radical ways, and many have the feeling that during psychedelic experience they are exposed to the inner workings of their mind rendered in various ways. If there's truth to it, then psychedelics are quite seriously the best scientific tool of the mind we have available. Reasonable arguments can be made as to how psychedelics are discussed and used to test theories, but the involvement of them in the first place in studying consciousness seems trivially obvious. All other psychoactive substances are applicable as well, but psychedelics seem to be most revealing and applicable.