Actually, the success of science is its ability to predict what will occur in a wide variety of situations. Otherwise science wouldn't have been such a big deal.
If it were possible to specify how much happiness is enough, and how much happiness isn't, precisely, then it would be science. That's the only way to make generalizations from the results. But the threshold of happiness is imprecise, so therefore it's not science.
If it were possible to specify how much happiness is enough, and how much happiness isn't, precisely, then it would be science. That's the only way to make generalizations from the results. But the threshold of happiness is imprecise, so therefore it's not science.