I believe that probably the assumptions that everybody is stupid is totally right. This does not mean that every individual person is stupid. They could be ver

I believe that probably the assumptions that everybody is stupid is totally right. This does not mean that every individual person is stupid. They could be very very smart, but when they join a macro organism they could behave very very stupid following emotions like nationalism, pride, being part of the group, fear and hatred, power or sex. The advertisement industry operate under the assumption that human beings operate under irrational forces that are stronger than anything else and they are right because people buy things that they advertise. It probably does not make rational sense that because people see a tennis player like Federer using a specific razor, people are going to buy this razor, but it just happens. There was a politician called Hitler that used this hiphotesis: "masses are stupid", and he got to control Germany entirely(probably the better educated country in the world, with the smarter people like Einstein, Von Braun, and so on), and kill millions of Germans in the process. It was Freud who wrote the "Mass Psychology" because it became obvious for him that intelligent individuals could become totally irrational when they take part on masses after the experience of Nazism that made this highly intelligent individual to lose his job because he was jew. Not so hard to understand, we know that very smart individuals could become totally irrational in their personal lives. For example a beautiful women or man could seduce them and they knowing rationally that they are being manipulated not being able to escape. Look at the economy today: we are following a path of printing money and increasing our debt that won't make sense for any person with half a brain. The same happens with Ukraine, Europe(their leaders) are following US in trying to make war with Russia, what makes zero economic interest for Europe. Less sense makes a military confrontation with Russia or China, but we are following this path.