John Mezias and Bill Starbuck published several articles in which they showed how people do not even know basic facts about their own companies, such as the sales of their own business unit, error rates, or quality indicators.

FORBES: Most People Don't Know Their Business (so asking them about it is useless)

He agreed that the device did not explode owing to a defect in the timing unit and an error in the mix of paraffin and diesel fuel contained in the cylinders.

BBC: Man jailed for having Crossmaglen PSNI station bomb