Principle of uniformity

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The principle of uniformity or the "The Principle of Uniformity of Nature" postulates that the laws of nature discovered on Earth apply throughout the universe.

There are several variations and corollaries. A stronger uniformity principle is that the laws of event causation have remained constant throughout time (uniformitarianism) as well as applying everywhere in the 'modern' universe. A corollary in Physics is the postulate that there has been no change in the fine-structure constant since the Big Bang.

Another corollary of the Principle of Uniformity states that nothing that is now impossible in principle was ever the case in the past.


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