Would you not consider someone high on meth intoxicated? I think stimulants are clearly intoxicating too. Culturally, we're comfortable people doing their jobs

Would you not consider someone high on meth intoxicated? I think stimulants are clearly intoxicating too. Culturally, we're comfortable people doing their jobs right high on caffeine but unless you make a scientific study you cannot know whether that's the case. It's possible caffeine slightly impairs your ability use a vehicle, or maybe enhances it, or maybe it has no effect.