I quoted the article where it concedes the point. Usually a system is only coherent within a set of assumptions, in this case the assumption is people can&#x27;t easily rejoin or see their placement. That maybe doesn&#x27;t hold for physical lines but the example the article goes into is an internet service where people have no control or awareness over their place in line.<p>In any case, I&#x27;m just reiterating what the article says about this point, not sure what there was to disagree about.