How Do You Know If You Fainted?

Last July, I picked a random doctor out of the nearest facility, to go have one of those things called an annual physical, which I had never had before, having grown up in one of the many Chinese American doctor families who never go to the doctor.

Some of the dialogue went like this:

Me: I fainted three times in a row.

Doctor: How do you know you fainted?

Me: (not thinking too much about the question) Oh, I woke up and found myself on the floor, before I could get to the phone.

Doctor: But how do you know if you were unconscious?

Me: (Hm...) Well, I don't remember how I ended up on the floor.

Doctor: But how do you know if you were actually unconscious? Because, you know..., if you were unconscious, how would you know, you know...?

Okay, is that supposed to be some sort of pseudo-philosophy? Fainting = fainting. And the doctor's interest seemed to stop there instead of addressing the fainting issue. Is that what I get for picking a doctor who lists "psychosocial medicine" under her interests?