I'll also comment about the 'assumption' of the conservation of energy.
This isn't an assumption! This is a deduction based on many, many different test cases over a century and a half.
There is one interesting episode involving beta decay that is instructional here. The observations of beta decay were such that it appeared that energy was not conserved in the reaction. of course, this would be a significant fact if it were true and it was actively investigated at the time. But Fermi instead asked how it would be possible, given the observations, for energy to be conserved and concluded that another particle, not observed, was involved that carried the energy difference away. So, he proposed the neutrino.
it wasn't for another 2 decades that a neutrino was actually observed. But it was, and energy conservation was supported. So, not only has energy conservation been a consistent fact in all observations, it has been successfully used to predict the existence of unknown aspects of matter.
Now, there *are* difficulties with the concept of the 'total amount of energy' in the context of general relativity. In essence, the curvature of spacetime makes the definition of total energy problematic.
So, even in this regard, this guy is simply not telling the full story.
This isn't an assumption! This is a deduction based on many, many different test cases over a century and a half.
There is one interesting episode involving beta decay that is instructional here. The observations of beta decay were such that it appeared that energy was not conserved in the reaction. of course, this would be a significant fact if it were true and it was actively investigated at the time. But Fermi instead asked how it would be possible, given the observations, for energy to be conserved and concluded that another particle, not observed, was involved that carried the energy difference away. So, he proposed the neutrino.
it wasn't for another 2 decades that a neutrino was actually observed. But it was, and energy conservation was supported. So, not only has energy conservation been a consistent fact in all observations, it has been successfully used to predict the existence of unknown aspects of matter.
Now, there *are* difficulties with the concept of the 'total amount of energy' in the context of general relativity. In essence, the curvature of spacetime makes the definition of total energy problematic.
So, even in this regard, this guy is simply not telling the full story.
