Do You Think Energy Is Always Conserved?

The idea that energy is always conserved Seems very basic to physics and it seems pretty internalized by most of the public like I feel like you know, it's like asking which way does gravity point. There's a bit of a history here Right it used to be that we thought energy was conserved and that mass was conserved We would watch chemical reactions and we would notice that it was mostly a rearrangement of the atoms Like puzzle pieces moving from one place to another And so we had two principles conservation of energy and conservation of mass But then we learned conservation of mass not actually a thing right you can turn mass into other kinds of energy and energy into mass So then we generalized into