J.C.MacSwell

What if you had two cats in the box, one male and one female. After, say, 10 minutes a decay device will trigger one of them dead in a way that won't effect the other. (Say it triggers a cyanide capsule to rupture in the stomach). So you have a live/dead cat and another live/dead cat. Can they interfere with each other? Assume there is enough food and water in the box/system and half the box was isolated/compartmented so the cats can't get to it because of a trap door than wasn't (quite) big enough. After a year the trap door is sealed and the isolation/compartment is saved and the remaining half is jettisoned into a black hole. When the isolation/compartment is opened could it contain any kittens?

More energy is bound (somewhat) in the atom. The rest mass of the atom has increased.(?) Does this not represent an increase in matter? Or am I getting the definition wrong? (I suspect I may be))

If a photon is absorbed by an atom bumping up an electron isn't that an increase of matter.(and therefore creation/transformation of energy into matter)

So it's Einstein's fault? Nobody blamed Newton when they fell down.

Isn't it a non-accelerating frame?