Very. One consequence is that, for example, momentum might not be conserved, since according to Noether’s theorem momentum conservation is directly linked to th

Very. One consequence is that, for example, momentum might not be conserved, since according to Noether’s theorem momentum conservation is directly linked to the translation invariance of fundamental physical laws. One consequence of that in turn would be that Newton’s 3rd law, “every action has an opposite and equal reaction”, would not always hold since it’s equivalent to momentum conservation.