 Further, Austin noted that when it comes to appraisals, there is not a sharp difference between acts that are simply true and false, and acts that are assessed in other respects (Austin 1962 [1975: 140–7]). On the one hand, a warning can be objectively proper or improper, depending on the facts. On the other hand, assertions (statements) can be assessed as suitable in some contexts and not in others, and are not simply true or  false.[4]