This was only offered as an illustration of the hypothesis, and it's really up to the reader to decide, from their own knowledge and intuition about human natur

This was only offered as an illustration of the hypothesis, and it's really up to the reader to decide, from their own knowledge and intuition about human nature, whether your explanation is the whole story. Would you argue that the cases of 'air rage' that we see are due to people not knowing what planes are, or not having a general understanding of how airplanes or air travel work? It is also the case that people involuntarily placed in close confinement for long periods quite often do not start fighting among themselves even when they have no clear understanding of what is going on or what the future holds.