Actually, it does. Click on this link for details. When an atom splits, the mass of the two parts is less than the mass of the original atom, and the energy released arises from the conversion of that extra mass into energy in accordance with E=mc
2.
The radiation emitted from the element radium, arises from the slow conversion of a tiny fraction of its mass in accordance with that equation.
The energy of stars operates on the same equation - two hydrogen atoms smashed together to form helium, and on up the chain of elements, lose some mass in conversion to energy which eventually winds up illuminating our daytime.
And so on...
That post is in direct contradiction to #29 that indicate that until presently E=mc2 is only thoery.
My point is that testable hypotheses is not a requirement for scientific discussion.
ID is a thoery, spagettification is a thoery, etc...