In general, other people are not quite real to me. I think this is simply because my mind refuses to consider the sheer number of people I interact with, or perhaps the sheer number of people that exist.

*looks at her list of readers* Yup.

Re: the rest - interesting.

And re: empathy being a factor in "reality" - I know it's a factor for me. I literally don't notice people who have no spark. To the point where I bump into them sometimes. No one's really real for me without that spark.