The TSA are a funny bunch. They've searched through my 80 year-old grandma's bags and confiscated her paint. Yet, when I mentioned that the metal detector failed to detect my solid metal watch, the agent said "it's ok - keep going".
Critical thinking is not part of the curriculum. There's a rule stating that your grandmother's paint must be confiscated, but no rule stating what happens if the metal detector is suspected defective.
