We live in a golden age for learning about the universe. Our most powerful telescopes have revealed that the cosmos is surprisingly simple on the largest visible scales. Likewise, our most powerful 'microscope,' the Large Hadron Collider, has found no deviations from known physics on the tiniest scales.
The other possibility is that the universe really is very simple and predictable on both the largest and smallest scales. I believe this possibility should be taken far more seriously.
Despite the absence of observational evidence, many theorists promote the idea of a 'multiverse:' an uncontrolled and unpredictable cosmos consisting of many universes, each with totally different physical properties and laws.
So far, the observations indicate exactly the opposite. What should we make of the discrepancy? One possibility is that the apparent simplicity of the universe is merely an accident of the limited range of scales we can probe today.
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