“I actually think killing someone's battery is it's a one-way door not a two-way door... they will forever feel like you're killing the battery And we still have that from a few handfuls of battery bugs”

Battery drain is a one-way door — never fix it twice

At Life360, battery drain and location accuracy are treated as guilt-until-proven-innocent bugs worth chasing even when 80–90% of alerts turn out to be ghosts. The reasoning: a single real battery drain bug is irreversible — users never forgive it even after you fix it, and they churn permanently. Hulls identifies 'one-way door' bugs as a separate class from ordinary quality issues, warranting asymmetric paranoia and resource allocation.