Doing a contentious hard fork is not healthy. It's basically a 51% attack being justified through argument.

I'm just guessing to say that 75% is a large enough number that that forces the rest of the network comply. But if they don't...if you have an ongoing... This is essentially a civil war. It is technologically equivalent to a 51% attack what Hearn and Andresen are doing. And so you essentially have a civil war situation. It will certainly exercise all of Bitcoin's security features...let's put it that way...as any war would.