but what if growth is required for certain scientific and medical investment, funding, and advancement even if it depresses the average happiness of a populatio

but what if growth is required for certain scientific and medical investment, funding, and advancement even if it depresses the average happiness of a population? If that is true, how much of suffering of individuals are we able to tolerate to keep the average of a whole up a few notches? (re: all the issues with utilitarianism)