[TeMPOraL]

> I have yet to see anything create protons from energy, so I am hesitant to do this.

Won't a proton/antiproton annihilation also create two photons? If so, wouldn't that also work in reverse?

[dekken_]

> Won't a proton/antiproton annihilation also create two photons?

I expect it would make a lot more than just two photons. See: https://en.wikipedia.org/wiki/Annihilation#Proton%E2%80%93an...

> If so, wouldn't that also work in reverse?

It would have to be demonstrated.

[TeMPOraL]

Thanks, I didn't know proton/antiproton annihilation is so complex. But it makes sense.