My main discovery on the third decade: stupid people don’t look stupid! Moreover, they also know how to speak, read and write, they study, go to work and generally to some extent succeed in life. You learn to distinguish them only by 25 years by some circumstantial signs - logical mistakes in reasoning, self-love, "black-and-white" thinking, "dwarf stubbornness", turbidity, a tendency to envy... If I understood all this at least seven years... But the nerves spent in childhood and youth you will not return and you will not get rid of complexes.