Perseveration with demonstrably false arguments. This is illustrated for creationism by the ability to construct an Index to Creationist Claims which describes the plethora of such false arguments, rebutted over and over in the scientific literature but persisted in by creationists.

He had a down-to-earth attitude that translated into a straightforward, but effective strategy.

I have no idea who you are, but I thank you for arousing me.

There is something aboriginally absurd in the idea of the old gentleman staring wild-eyed at his own legs; and half recalling something familiar about them; as if he were revisiting the landscape of his youth.