Sentence:  <WSD>Perseveration</WSD> 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. 
Meaning of the word marked with <WSD> tags:  Argument by repetition; a mantra.