If you expect to be able to directly contribute to FAI, my current very tentative advice (which I’m following myself) is to focus on pure math, assuming you understand the philosophical side (problem statement) well enough (which would be the limiting factor for people who are already mathematicians). Take this with a lot of salt, since it’s more of a hunch following from the character of seemingly relevant informal ideas, and I can’t exhibit actual FAI-relevant math (other than the decision theory that was previously published, which is an important foothold and whose meaning I still don’t quite grasp, which is also one motivation).
If you expect to be able to directly contribute to FAI, my current very tentative advice (which I’m following myself) is to focus on pure math, assuming you understand the philosophical side (problem statement) well enough (which would be the limiting factor for people who are already mathematicians). Take this with a lot of salt, since it’s more of a hunch following from the character of seemingly relevant informal ideas, and I can’t exhibit actual FAI-relevant math (other than the decision theory that was previously published, which is an important foothold and whose meaning I still don’t quite grasp, which is also one motivation).