I think their attack doesn't work. It relies on "publishing their newest lbock" before the others discover it. However, there is no way to know when the others

I think their attack doesn't work. It relies on "publishing their newest lbock" before the others discover it. However, there is no way to know when the others found the newest block. Since they just try some Hash IV (afaik), it is well possible they discover the next block within seconds of the first. So there is an incentive to publish their latest block as soon as they found it. Also, what I read here and what I agree with, selfish mining seems self defeating which reinforces the first point. The second selfish miner pool should publish its newest block just before the first selfish miner pool, pushing the equilibrium of "latest block release" to ASAP. Any comments?