I agree, but https://en.wikipedia.org/wiki/Swiss_cheese_model https://en.wikipedia.org/wiki/Swiss_cheese_model . You usually need a few bad coincidence to get a

I agree, but https://en.wikipedia.org/wiki/Swiss_cheese_model https://en.wikipedia.org/wiki/Swiss_cheese_model . You usually need a few bad coincidence to get an accident. Probably the firefighter need monthly reminder that the light overrule the controller instructions.