It is unlikely that this is due to the fact that the buildings at the dawn of mankind did not have windows. Only much later the prototypes of windows appeared: cutting or narrow cracks. They did not know how to make glasses, so the windows had an extremely small size, because it was also necessary to defend themselves from bad weather. Later, in the buildings of Ancient Rome, the windows became more, they put bars on them so that the birds did not fly, the precursors of the misfortunes.