@owen@mhoye It depends on how you define "useful", but since the ratio between consecutive Fibonacci numbers gets closer to 1.618... as you go higher, it's always going to be within 1% once you go beyond 5mi (8km).
So I'd say it stops being useful once you no longer have a use for numbers that large 😂
@owen As far as you want to go. Given that it's an estimation that's good to within less than one percent, it's good basically to infinity. Anyone needing more precision than that won't be using an estimation heuristic.
@owen @mhoye It depends on how you define "useful", but since the ratio between consecutive Fibonacci numbers gets closer to 1.618... as you go higher, it's always going to be within 1% once you go beyond 5mi (8km).
So I'd say it stops being useful once you no longer have a use for numbers that large 😂