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When Disney erased decades of expanded stories from the official canon, it reopened an old question about who owns a shared universe. The views here split between corporate canon authority, George Lucas's original vision, fan communities' inclusive readings, and retroactive rewrites that quietly change what happened. Deciding whose Star Wars counts tells you something about every franchise you love.

The claim that the Great Wall is visible from orbit survives in textbooks and trivia nights despite astronauts saying otherwise. The arguments here approach the myth from different angles: the physics of human eyesight, firsthand astronaut testimony, the role of cameras and optical aids, and why comfortable falsehoods outlive clear corrections. It becomes a lesson in how to test what everyone knows.