The Gobstopper Test

After seeming to lose, Charlie silently returns the Everlasting Gobstopper. Wonka reveals that rival “Slugworth” was his employee Mr. Wilkinson and the bribery offer was a covert integrity test for every child.

A hidden adversarial evaluation reduces evaluation-aware performance: the candidates think they are unobserved when tempted to defect, so the test probes behavior beyond the visible benchmark.

It tests a child’s loyalty under unethical entrapment, not an AI system’s dangerous capabilities; Wonka controls both sides of the test.