We fail in even the simplest of all scientific observations-nobody looks up anymore.
We already know the limits of Einstein's theories. From the centers of black holes at the very beginning of the universe - we call these singularities - Einstein's equations fail. In fact, people have joked that's where God is dividing by zero.
Einstein's theory, we know that it fails. In advance, we know it fails. So that a deeper understanding of nature is awaiting us.
The greatest teachers are the ones that turn a B student into an A student, or a failing student into a B student.
We went to the moon using just Newton's laws of motion and gravity. Newtonian dynamics we call it. So then we find out, "Well, this works because there's certain regimes we've never tested it in." Had we done so, we would show that it didn't work: For example, at very high speeds, very high gravity, Newton's laws fail. They just fail. You need Einstein's laws of motion and gravity. Those would be his special theory of relativity and general theory of relativity. Now you invoke those and it works.
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