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## Main Question or Discussion Point

Hello everyone. From the elementary courses of science, one of the first things that is always taught are:

1) Two matters containing mass cannot occupy in the same space and time.

2) Matter cannot be created or destroyed.

The first statement is quite trivial since we experience it in our everyday life.

But about the second statement, I was wondering, who and how was the second it established. I first thought of Einstein with the equation of E = mc^2; but i think his equation intended prove that matter can be converted to energy not about creation or destruction of matter. In addition, i think that the second statement was established before Einstein proved anything about the energy formula.

(Although i also heard of mathematical models about creating particles in the quantum world but it is not physically proven yet or at least hopping for the answer with the particle accelerator)

1) Two matters containing mass cannot occupy in the same space and time.

2) Matter cannot be created or destroyed.

The first statement is quite trivial since we experience it in our everyday life.

But about the second statement, I was wondering, who and how was the second it established. I first thought of Einstein with the equation of E = mc^2; but i think his equation intended prove that matter can be converted to energy not about creation or destruction of matter. In addition, i think that the second statement was established before Einstein proved anything about the energy formula.

(Although i also heard of mathematical models about creating particles in the quantum world but it is not physically proven yet or at least hopping for the answer with the particle accelerator)

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