"A lot of people like to say that you can't really take down Bitcoin but you can. You just have to raid the 3 or 5 big mining installations around the world and you're done."
- Jackson Palmer at The Future of Money & Technology Summit 12/2/14
https://www.youtube.com/watch?v=SBvwUT3u31g&feature=player_detailpage#t=2930Huh? I believe one of the big mining farms, Cloudhashing in Iceland for example, has about 5% of total mining capacity. Suppose you suddenly shut down 25% of total mining capacity. Wouldn't that just slow down block confirmation time 25% until the next difficulty adjustment or until other miners joined in? I suppose in the future, if and when bitcoin mining becomes more and more centralized, this could represent a transient vulnerablity but even then wouldn't the network simply adjust and continue?
