the mind > attention and judgement > testing > proof, demonstration > prove, demonstrate [verb (intransitive)] > furnish proof (2)
intransitive. To prove or be evidence of something; hence, to be of importance, consequence, or use; to signify. Cf. argue, v. 3.
to go to show: to tend to show; to indicate; to serve as evidence or proof that. In later use frequently also (colloquial) in it just (also all, onl…