The common cause of longtermism/GPR is worthwhile factions is the belief that we can reliably influence the longterm future, this partly explains why many GPR researchers are longtermist
The global budget allocation frame of GPR is what distinguishes it from individual priorities research
This global budget allocation frame explains why people think the fine details of GPR matter, it’s because they expect they’re trying to be decision relevant for cases where you’re trying to direct the power/resources of the whole world towards some goal. As such they’re expecting to direct vast optimisation power, and therefore they want to be very confident that they’re optimising for exactly the right thing.
optimised worlds) where most directions lead downwards.