Quote of the day by Michael Faraday: 'There's nothing quite as frightening as someone who knows...'

Michael Faraday warned that absolute certainty shuts down debate and ignores warning signs.

Faraday, a 19th-century scientist and self-taught genius, discovered electromagnetic induction and benzene.

Research shows limited understanding can cause people to overestimate their competence.

Rigid mindsets in leadership have historically led to disastrous consequences.