[angry_albatross]

I didn't say anything about the amount of energy required to steal gold from anyone. I was talking about the energy required to maintain the ownership of the gold. These are two completely different things. If I bury a box of gold in the woods, I can then spend zero energy to keep that box exactly where it is, but a thief might have to spend a lot of energy to dig many holes in the forest ground since they don't know where I buried it. Or, more likely, they don't know who I am or that I own any gold, and the energy required to steal the gold from me is kind of infinite since they have no idea where to start, and would be required to do some sort of brute force search of the entire planet.

The point I was making is that I believe that the bitcoin value storage system burns more energy in a "passive" state, just keeping all the coins safe than the gold storage system, where security by obscurity is doing a lot of the work. As far as whether it takes more energy to mount a 51% attack on the bitcoin network or to rob Fort Knox, I don't know. That is a different and irrelevant question. I'm sure that the energy spent on the guards and A/C and everything for the building containing gold at Fort Knox must be far less than the energy usage of bitcoin, but that doesn't necessarily mean that it is easier to steal from Fort Knox and get away with it.