1. Thats not what a 51% attack is and doesnt let you do that. do research.
2.bitcon isnt centralized, pools are false centralization. ie. if someone pulls some shady stuff, the people 'get out of the water' and they lose the hashrate and peoples faith in them, pool owner then loses their income stream. any other form of centralization is just as much BS. do research.
3.no it doesnt... do research...
3. If this was the case we would have prunning already
As far as I have understood, Gavin and the developers have promised that pruning will be ready "when it is necessary". I have no reason to doubt the developer team, but when is it
really necessary to prune, at 1TB? Has anyone come up with a timeline? What proof is there that pruning will be possible when it
really is necessary?