Even when the apparent meaning is plain, a different interpretation can be imagined. Yet not every conceivable possibility prevents acting on the text. In discussing iḥtimāl irādat al-ghayr, the footnote distinguishes a mere unsupported possibility from a weighty reason to depart from the apparent meaning.
For example, simply imagining that a particular person might have been excluded from a general instruction does not establish an exception. A sound qualifying text or contextual proof would be a separate matter. Possibility alone and evidence-backed interpretation must not be confused.