Experimental Computational Philosophy: Shedding new lights on old philosophical debates

Philosophy can benefit from experiments performed in a laboratory for philosophical experimentation (SophoLab). To illustrate the power of Experimental Computational Philosophy, we set up and ran several experiments on a part of Harsanyi's theory on utilitarianism. Then it became clear that his theory is underspecified. We filled in the blank spots and discovered that information and its costs are key in the effectiveness of act and rule utilitarianism. We also identified three further elements that have particular influence on the effectiveness of both strands of utilitarianism: group size of agents, decision-making around uncertainty, and social culture towards particular types of actions.