: The "grilling" serves as a crucible. Much like scientific risk assessments of grilled foods look for hidden contaminants (like PAHs or acrylamide) that only emerge under high heat, the interrogation of "Mr Validity" seeks to find hidden "toxic" flaws in a person’s character or argument.
: Once the "grilling" is complete, the subject is either validated (found to be "sound") or dismissed as "contrived" or "pretextual". The success story of Mr. Brainwash analyzed - ArtCritic Grilled – Mr Validity
: Intense heat (metaphorical or literal) is required to reveal the underlying composition of a subject. : The "grilling" serves as a crucible