Spectacle persuades through scale rather than argument. A deliberately overwhelming sensory display — vast crowds, synchronized movement, monumental staging, lights, sound, precision, expense — saturates the audience’s capacity to evaluate and produces a feeling of awe.
Awe tends to shrink the sense of self and heighten receptivity, and the technique exploits this by binding that awe to a claim the stager wants accepted: this leader is powerful, this nation is united, this company is the future. The manipulation is the substitution of magnitude for merit — the size of the show stands in for the strength of the case.
Because the effect operates through emotion and embodiment, it is hard to notice as persuasion at all. It differs from curated credibility cues and from credentialed-authority appeals: spectacle works by overwhelming scale itself. The tell: grandeur doing the persuasive work while the underlying claim or offer goes unexamined.