If society doesn’t end first, banning X-risks research worldwide is an effort that must be prolonged indefinitely, always ensuring that nobody ever fiddles with her computer in a way that could create an AGI. This means that with time the probability to enforce successfully the ban always decreases. Building an FAI instead, is an effort that once accomplished stays so: its probability, however small, might even increase with time.
If society doesn’t end first, banning X-risks research worldwide is an effort that must be prolonged indefinitely, always ensuring that nobody ever fiddles with her computer in a way that could create an AGI. This means that with time the probability to enforce successfully the ban always decreases.
Building an FAI instead, is an effort that once accomplished stays so: its probability, however small, might even increase with time.