I don't know if I believe this. I think many people can deceive themselves quite thoroughly about their real persona while at the same time having a laser focus on the truth about another person. They don't make for the most trustworthy people in the world, but they can exist.
Get a napkin a day at my blog
The Napkin Dad Daily
I have my first self-published book ready!
The Napkin Dad's Book of Absorbent Ideas - volume I is available on my website