However, taking the phrase literally—“index of acrimony best”—offers a fascinating opportunity to explore how we measure hostility, and more importantly, what the best index of acrimony might be in human interactions, media, and politics.
Note that Commander’s optimal IoA is lower because the multiplayer format dilutes directed acrimony. The best Commander IoA often involves one well-timed Armageddon per night—not per game.
The optimal (best) formula derived through principal component analysis is:
The "Emotional Index": Explaining the five chapter titles mentioned above.