I think you&#x27;re making the OPs point about the parallels.  You&#x27;ve come up with these technical arguments about POS system limitations and management expectations for why the waiter is &quot;right&quot; to be annoyed at being asked to split the customer&#x27;s check.  The end result is that the customer is only going to remember that the waiter was rude when he was asked to split the check.