What is Survivor Bias?
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In most situation, we are observing what survived. If we only look at those that survived, we are ignoring what didn’t survive and this can lead to false conclusion.
Someone already presented an example about old building. [Here](https://www.youtube.com/watch?v=P9WFpVsRtQg) an example about planes in WW2. At first people were looking at surviving aircraft and where on them we found bullet holes. Obviously those are the places where planes get shot at and we should reinforce those places to improve the survival of planes.
But that’s is a false conclusion. In reality, those planes were able to survived because they were not shot in critical area. Instead we should reinforce where no bullet holes are found in survivors. Because the planes that were shot there, didn’t survived.
The people originally based their conclusion on the survivors only and this was a mistake.
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