In front of them sat experts from campaigning bodies, transport research and the police - all ready to get into a proper discussion - and yet the MPs demonstrated that they didn't even know the most basic of facts.
Evidence and statistics were bypassed in favour of opinions and anecdotes on sideline topics.
Such a clear demonstration of lack of research and understanding at this level of seniority would, in any other business, be classed as negligent.
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The assault took place after a woman got on the train from Oxford Circus station with three children aged between two and five.
The sex offender was reportedly transferred from HMP Wakefield in West Yorkshire to HMP Belmarsh, south-east London.
Officials say the lizard, about 30cm long, is believed to be a Bengal variety, but it is not known where the reptile's journey started.