City council member: The Senior Guild has asked for a temporary exception to the ordinance prohibiting automobiles in municipal parks. Their case does appear to deserve the exception. However, if we grant this exception, we will find ourselves granting many other exceptions to this ordinance, some of which will be undeserved. Before long, we will be granting exceptions to all manner of other city ordinances. If we are to prevent anarchy in our city, we must deny the Senior Guild' s request. The city council member's argument is most vulnerable to criticism on the grounds that it ['presumes, without sufficient warrant, that one event will lead to a particular causal sequence of events', 'dismisses a claim because of its source rather than because of its content', 'fails to make a needed distinction between deserved exceptions and undeserved ones', 'contains premises that contradict one another']