In theory, never (either hyperbolic time discounting is a bias, and never “should” be done, or it’s a value, but one that longtermists explicitly don’t share).
In practice, hyperbolic time discounting might be a useful heuristic, e.g. perhaps since we are bad at thinking of all the ways that our plans can go wrong, we tend to overestimate the amount of stuff we’ll have in the future, and hyperbolic time discounting corrects for that.
In theory, never (either hyperbolic time discounting is a bias, and never “should” be done, or it’s a value, but one that longtermists explicitly don’t share).
In practice, hyperbolic time discounting might be a useful heuristic, e.g. perhaps since we are bad at thinking of all the ways that our plans can go wrong, we tend to overestimate the amount of stuff we’ll have in the future, and hyperbolic time discounting corrects for that.