![]() With the advice taken onboard, the survivability increased and the rest is, well, history. ![]() He reasoned that the only data about survivability was coming from the surviving planes themselves the ones that came back with damage showed exactly where the non-lethal blows could be dealt. Wald observed all of this and advised that the airforce start adding armor only to the untouched areas – the parts without a trace of damage. In fact, it decreased, as the new armor added weight and reduced the agility of the planes, and they still arrived back with damage in the same areas. Yet the survivability rate didn’t increase. Specific parts were shot and torn up, so new armor was added. The previous investigators had seen the damage and destruction dealt to the aircrafts, and advised more armor being added to the most damaged areas, to increase their protection. Wald was a smart man and looked over the prior analyses that had been done. Good research begins well before the first experiment starts.ĭuring World War II, a statistician by the name of Abraham Wald was given a rather unexpected job, given his background: of improving the survival rate of US aircraft.
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