Are humans conscious? I have learned to note when they are not, when they are talking and unaware of their surroundings, and stand next to them and say to other

Are humans conscious? I have learned to note when they are not, when they are talking and unaware of their surroundings, and stand next to them and say to others "They're not conscious right now, they can't hear what I'm saying". You would think this would be incredibly rare, but it's more common than I ever expected. Awareness of surroundings does not equal consciousness, but "consciousness" measures can can assume things that are not always true.