Quote from: R2D221 on February 10, 2015, 02:21:18 PM

To mine two chains you need double the power, so in this scenario the 51% would actually be 25.5% and 25.5%.

Don't you mean 102%? Also I don't know if you guys remember but this actually was possible for ASICMINER with their first line of products. They, for a short while, actually achieved 51%+ and could have ruined this experiment for us all or at least damaged the functionalities and exchange rate more than what Mt. Gox has done, on many occasions.

Bitcoin is so resilient it actually survived a hard long fork on version "I think" 0.6?0.8?.

Now guys look at another attack vertex. How about not attaining such hash power but highjack just a couple of big pools at the same time. Infiltrate and sleep and pick the worse moment, say when the operators are sleep. And fork this thing real hard or block ALL transactions but just mining empties. Granted the miner will switch but it just needs a little time and a couple of discrediting hate articles and boom. Price down hard!