1^st^ law of thermodynamics :
There is something that will always be the same.
2^nd^ law of thermodynamics :
Everything else always changes and never will be what it was before.

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[โ€“] [S] -1 points 2 years ago*

On a side note :
is there something in nature that prescribes the conservation of energy ?

(please, if you answer this, do so under my other comment (big bang...) ...I don't want to lose track of the main topic).

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