Nomads are paradoxical to sedentary society. They represent the different, the unknown and a potential instability. This is why sedentary societies usually try to domestify nomads by assimilating or eliminating them.
Nomads defy the logic of linearity. Their ways of life cannot be understood by logic alone. It is a multidimensional experience. So is life. That is why complex systems cannot be understood by linear models.
Nomads do not look for the meaning of life more than they try to give a color to reason. Nomads learn by experience and listen to their feelings. They accept differences, novelty and even paradoxes.