Perceval meets a party of knights in armour; he first adores the leader as God, and then takes them to be some new and wondrous kind of animal, asking the most naïve questions as to their armour and equipment.
Only the dangerously complacent or naïve could assume that we have safely put the BSE crisis behind us.
They were quite obstinate in their opinions and sneered at my "naïvety" in accepting your suggestions.