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Somewhat related is noether's theorem (from Emmy Noether) that draws direct correspondence between symmetries and conserved quantities. E.g. conservation of linear momentum corresponds to a system that is invariant to translations. So you can find some of the fundamentals of a system by looking at symmetries and Lie groups/algebras give you tools to look at symmetries.


Making this more related (to GP's comment):

Charge is conserved => symmetry (though not capturing exactly the "(non-Noetherian) localization" that is special to it)

GP suggested the opposite thought process-- as you rightly imply:

disagreement between 2 observers whether charge is conserved or not => discovering that _something else_ is conserved




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