The wisdom of multiplication
Italian version We normally calculate the wealth of a group of people as the sum of the wealth of individuals. Suppose we have 1 island with 5 inhabitants, each of whom has 1 gold coin. The wealth of the island is 5 coins, and it would be the same even if only one person had 5 coins and the other four had none. Addition gives us no information about how wealth is distributed within a group. Instead, let us try…