Liberalism is associated with the technical capacity of a brain to build several long-range models, associated to the same external reality. Moreover, that brain has to compensate for the design deficiency XD3 (with A and B variants, see MDT). As several models exist, associated to the same external reality, the possibility exists to activate any of them or several at one time; these models can change dynamically. The liberalism and the spirit of tolerance are closely connected. Liberalism admits several ways of action, and tolerance makes possible the choice of several ways, alternatively or simultaneously. Liberalism and tolerance are characteristic to an evolved and high quality brain. It is very important to note that tolerance implies the knowledge of several models associated to the same external reality. When the brain cannot build anymore several models associated with the same external reality, it will restrain itself to a single model, and intolerance appears. The perfectionists (e.g. the Americans) can have a serious problem here. Perfectionism means rejecting basically all the models, except one created by specialists. Thus, the tendency to induced schizophrenia (XS1B) increases for the perfectionists. Example: The prompter is used in some TV broadcasts. The persons reading the news are totally de-personalised and practically recite, sometimes without understanding what they are saying, even when they are the authors of the texts. When news is presented, both speakers and listeners have two problems: to read/listen to the message and to understand its meaning. When the perfectionism of transmission of the message is exagerated, people will allocate less energy to understanding its meaning. Using the prompter is against the tolerance and the spirit of adventure characteristic to Europeans. Let's analyze now the spirit of adventure and the desire of knowledge. In front of a complex external reality, we need to build more and more complex ZM models. Without them, ZAMs can be built only approximately. This situation is practically very frequent, and the reaction to imperfect ZMs will characterize the spirit of adventure and the desire of knowledge. It is clear that if we have no good quality ZMs, we cannot build good quality ZAMs, and this will block even more our possibility to build good quality ZMs. A solution is to develop the ZMs and ZAMs (by simulation on suitable test models) up to the moment when we have enough guarantees that an action on the external reality will evolve as predicted. This is how perfectionists act. A second solution is to act based on the imperfect available models, evaluating the risk in a more or less precise way. The action in these circumstances characterizes the spirit of adventure.