Consistent with Bentham’s ideal of “the greatest happiness of the greatest number”, the quality of our world or universe (QW) could be assessed in terms of the ratio or quotient of the magnitude of the sum total of the subjective well-being (SWB) scores of everyone in the world or universe divided by the standard deviation of the distribution of all of the SWB scores.

In a similar way as the Dow Jones Index provides a means of assessing broad-based economic strength, this ratio, the QW, would provide a means of assessing broad-based (ideally universal) happiness and other aspects of SQB. It might also serve as a means of determining whether or not the lot of humankind were actually improving over time, that is, whether or not the changes which will come about in the world will actually be constructive. The larger the value of QW, the more worthwhile, humanistic, and heavenly we could consider our world to be.

Lewis Mancini, ‘Brain Stimulation to Treat Mental Illness and Enhance Human learning, Creativity, Performance, Altruism, and Defenses Against Suffering’, Medical Hypotheses, vol. 21, no. 2 (October, 1986), p. 217