In a seed bank, access to the cold store is permitted only if a supervisor is present. During a power failure, Mara entered under the supervision of the collection manager to move vulnerable samples. A later report claimed that anyone accompanied by a supervisor must be allowed inside. The safety officer objected: accompaniment removes one obstacle, but researchers still need training and a valid task. The report had converted a restriction into a guarantee. A supervisor may therefore be present during a visit that is refused for another reason, whereas an authorised entry without supervision would violate the stated rule.