117 That the lighter machine yields to the heavier, and in machines of the same kind, that the empty yields to the loaded—this rule is founded on convenience. That those who are going to the capital take place of those who are coming from it—this seems to be founded on some idea of the dignity of the great city, and of the preference of the future to the past. From like reasons, among foot-walkers, the right-hand entitles a man to the wall and prevents jostling, which peaceable people find very disagreeable and inconvenient.