when someone keeps arguing the same exact point over and over and over (either attacking or defending something) over and over until it just almost becomes an automated response, that's a sign of some autism or personality disorder. Specially when no amount of evidence proves their point wrong, or when they wont listen to reason at all, when they are explained why what they are saying is not true, but they will still argue it weeks after. (that compulsive behavior)
sound like anyone in here?
...
You?