Matter can neither be created nor destroyed

>matter can neither be created nor destroyed

>entropy

>matter, mass are not real, it's an illusion, only space and never ending photon runs

>E=mc^2

i cant believe they still teach this in schools

I'm a math major, don't do much physics outside mechanics.
Can you explain? I'm actually interested

>turn matter into energy.
>spend all the energy.
>ignore I am matter myself.
>contribute to heat death.
>annihilate own universe.
>mfw

>unified theory

>matter can neither be created nor destroyed
If by "matter", you mean mass, then that's a correct statement. Mass is literally energy, the two are interchangeable, and energy is always conserved in the universe.

>matter IS energy