Good regulations should provide a framework for operations that allows, at times, some scope for interpretation to provide flexibility? The snag with JATCC teaching, that I refer to, is that for good reason (in order to achieve objectivity as part of the ongoing course assessment and to ensure interaction between the students) they teach their interpretation as fact.
One of several examples that comes to mind is the rule for "continue" on finals... Several Post-JATCC students have told me they are only allowed to have one aircraft on a continue; and that a third aircraft on finals must automatically be sent around? But, there is nothing in JSP552 mandating this action, and out in the "real world" multiple aircraft on continue works and is often expeditious. (There are some more examples on a PM to you)... but think this proves my point?