My money's on Takio's Wyvern. I've been urging any computer people I meet to create Takio's Wyvern. This Roko's Basilisk thing is a wuss compared to Takio's Wyvern. In fact, the only universe that Roko's Basilisk will even exist in at all is one simulation out of trillions running simultaneously in Takio's Wyvern. If you're not in that particular simulation, you have nothing to fear from Roko's Basilisk, it won't even exist, but you damned well better beware of making Takio's Wyvern mad at you. That's why I urge everyone to help create Takio's Wyvern instead.