His point is that some things benefit from ‘mishandling’, from shocks, bangs and random knocks.
An emergency or problem, for example, can often lead to a useful new idea.
‘The airline industry benefits from every mistake ever made anywhere on the planet,’ he said. ‘Any pilot who makes a mistake anywhere on the planet today will make your next flight safer. The banking industry is the opposite.
‘Every mistake takes the banking system closer to total collapse. One system is antifragile, the other is fragile.’

via Renowned thinker Nassim Nicholas Taleb: Let’s cherish the unpredictable | Metro.co.uk.