I'm pretty sure that I encountered the survivorship bias story before that picture, but that picture is how everyone visualizes it. But from https://steveblank

I'm pretty sure that I encountered the survivorship bias story before that picture, but that picture is how everyone visualizes it. But from https://steveblank.com/secret-history/ https://steveblank.com/secret-history/ I learned that what really helped the planes most was not better armor, it was radar countermeasures that kept the Luftwaffe from being able to target the bomber stream. If you have an hour, I highly recommend that talk. And the blog series that goes with it is brilliant.