A circle is a special ellipse in which the two foci are coincident and the eccentricity is 0.
I too am a special ellipse with two coincident foci, but unfortunately for me, my eccentricity is 157.
I am outcast from their society.
It's nothing to do with the eccentricity, it's because I'm human and they are abstract concepts.
I don't take it personally.
And we still exchange Christmas cards.