In the accelerating contest over who gets to define the future of artificial intelligence, Mark Zuckerberg stepped into the open this week to question whether Anthropic has its priorities in the right order — suggesting that safety, however noble, should not become a brake on progress. The exchange is more than a corporate rivalry; it is a public crystallization of a philosophical fault line running through the entire field, between those who believe caution is the highest form of responsibility and those who believe speed and openness are their own kind of safety. How this argument resolves —