Even basic physical phenomena aren't definitive. That's not how science works. We shouldn't expect a singular metric of wellbeing to rely on for all time. Exist

Even basic physical phenomena aren't definitive. That's not how science works. We shouldn't expect a singular metric of wellbeing to rely on for all time. Existing wellbeing measures and models are useful enough to inform practical decision-making and design. What we admittedly lack are measures sensitive enough to indicate when small design improvements are successful. More research needed.