I just had a conversation with a lady yesterday at the place where I work out. We talked about getting injuries we have no idea where they came from--mostly black and blue marks, but it went on for quite some time and we laughed together even.
Today she came in and looked right at me and had no clue she had ever seen me before in her life. I'm sure glad I didn't send her a big Hello! I did smile tentatively at her in case she recognized me but nope, no response.
Now this doesn't really surprise me because you see sometimes I get invisible. It happens mostly at the mall where people have a tendency to step on my foot. Apparently, I was invisible through our whole conversation.