A shielding model is associated to a normal model which has problems. A shielding model is not based on external reality. It cannot be included in a normal model, as the normal model cannot include a model which is not based on external reality. The reality generated by a shielding model can be called "illusion". The shielding model can be made for any problem without solution. Such models reduce the nonsense activity of a brain and so, there is more energy to solve the normal problems. But, such models could be also very dangerous. The activation of a shielding model also deactivates the protection structure of a person or at least some section of it. The shielding models are the main models, which can pass from 'normal-to-PSM' zone to PSM. Such changes could be very dangerous for that being, because some protection models are deactivated forever. The shielding models are partially integrated in the normal structure of models and so, the structure can, partially, control them. ACTIVABLE MODELS (WBAM) A ZM could predict a future situation of the external reality, which has no associated model. Such a situation can activate the PSM. To prevent this, the ZM can make a would-be active-type model (WBAM). Such a model is not created by direct interaction with the external reality. Such a WBAM acts as a shielding model up to the last moment before the activation. After activation, it becomes a normal ZM model. A normal ZM is built in direct interaction with external reality. WBAMs can be associated with the external reality without previous interaction with it. Note: the emotion is defined in MDT as a transient situation between the activation of the PSM and the moment when a normal suitable model is activated. The activation of the PSM can be prevented by a good WBAM (of course, if that situation was predicted by a main ZM). WBAMs are included in the normal structure of the models and they are controlled by it. ILLEGAL MODELS (XZM) All types of models described up to now are normal models. They are included in a harmonic/logic way in the structure. There are some models, which are not included in the normal structure of models, or they have lost their normal connection to the structure. Such models are called "illegal models" or XZM. There are many situations which can produce illegal models. A case is when a new model is not finished because the specific external reality, which produced it, is no met anymore. For instance, somebody has been involved in a car accident. A new model is started, but because such situation will not be met again in the near future, the model is not finished, because there is no external reality to finish it. Such model could evolve as an illegal model.