[oidar]

A person can certainly be conscious, but can they also be not-conscious? I think that most of our cognitive time is spent in activities that don't require consciousness and consciousness itself isn't needed for the majority of activities that people do. I would go so far as the a non-trivial part of people's time is spent in a not-conscious state.

[Marsymars]

That doesn't jive with normal definitions of consciousness. The word we use for "not-conscious" humans is "unconscious".

[layer8]

Regardless of the word we use, occasionally there have been times where I was awake but so absorbed in an activity or in my thoughts that I didn’t have a self-experience, for a certain duration (tenths of minutes). My mind was focused solely on the activity, and not on itself whatsoever. It’s a surprising feeling to notice that while you have memory of what you had just been doing, you have no memory of your mind experiencing itself doing it. I would be inclined to say that I wasn’t conscious during that stretch of time.

[overgard]

Amusingly, I think Ted Chiang actually wrote a short story about this very concept (it involves people committing a form of suicide that removes their conscious experience but they still act and live in society as some kind of psychic zombie. I’m pretty sure it was him anyway, can’t recall the story name

[oidar]

Maybe “What's Expected of Us”?

[overgard]

I was trying to find it, but I read it a long time ago and I have a bad feeling I might have mashed a few different stories together in my head. That is a good story though!