4 ms·Many people had to die for us to learn the safety aspects of flight (learning by failing)by scirocco 8y agoMany people had to die for us to learn the safety aspects of flight (learning by failing)samstave 8y agoWhich is eactly what we have learned to NOT repeat. My statement is still valid - We now know that letting many people die in vehicle safety trial-and-error is a non-starter.mulmen 8y agoI often hear this stated as "regulations are written in blood".