 Second, on this account of authority, the legal rule affects the agent’s deliberation not because of the sanction for non-compliance but because compliance with the legal rule, even in the absence of a sanction, is in the agent’s best interest. This feature of the account of authority conforms to notions, developed further below, of the way in which rules enter the deliberative process. But this feature also limits the applicability of the account to those legal rules that bear on the agent’s immediate interest. Many legal rules direct the agent to adopt actions that raise her own costs; in the absence of a sanction for non-compliance, her own interest would dictate non-compliance. For example, a rule requiring that an agent adopt due care in certain activities may raise the agent’s  costs.[21]