Nope. There's no single algorithm that will lead to General intelligence. As long as the apex of our ML techniques is parameter optimization via gradient decent, there will be no critical mass point. Currently, it's possible for someone to take a modular approach to general intelligence. And someone may very well be working on that and will spring such a system on the world but because each subsystem is only as good as the state of the art, and if the systems were that good the developers would try to capitalize on such a system immediately rather than waiting for all the other subsystems to surpass the state of the art, we would have some warning that the field was advancing; hence no surprise general intelligence.