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I should add that there are different versions of the equivalence principle. For something called the strong equivalence principle...

You can't, because a black hole is not made of anything you can build something from. A black hole is just spacetime geometry. It's not...

No. It is possible to construct theories in which it may differ. For example, ##F=GkMm/r^2##, where ##k## depends on the materials...

I personally think that GR's explanation of why ##M_i=M_g## is one of the most intellectually satisfying things in physics.

Give yourself time to think about it. GR is a profound change in our thinking.

There could have been some reason for ##M_i=M_g## other than GR, but nobody could come up with one. It was a mystery until Einstein...

I would call it a satisfying consequence of General Relativity. GR explains the mysterious reason behind ##M_i=M_g##, not the other way...

General Relativity hypothesizes that an object, appearing to accelerate due to gravity, is simply moving in a non-accelerated straight...

No. But the current understanding explains why the exact same mass is appropriate in both equations. That is one of the strong points of...

And if you have no choice, send it as a .jpg, and throw some other quirk like writing it backwards or Letter +1 or something.