Along those lines, Douglas Adams wrote in Mostly Harmless, "a common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools."
Proof of Life | Proof | An Idiot Abroad | Body of Proof | American Idiot | Proof (rapper) | The Idiot (TV series) | The Idiot (novel) | Rabbit-Proof Fence (film) | Legal burden of proof | Idiot Wind | Idiot Flesh | Rabbit-Proof Fence | Proof (play) | Idiot Pilot | Follow the Rabbit-Proof Fence | Death Proof | Zero-knowledge proof | Zero-knowledge password proof | Weather Proof | The Idiot's Lantern | The Idiot (1951 film) | The Complete Idiot's Guide to Songwriting | The Complete Idiot's Guide to... | The Burden of Proof | Rabbit-Proof Fence (movie) | Proof-theoretic semantics | proof that π is irrational | Proof of impossibility | Proof of delivery |