 Kriegel considers rejecting  (a).  On this proposal, when we seem to represent dragons, Bigfoot, or Santa Claus, we either fail to have an intentional state or we represent something else. One reason Kriegel rejects the first option is that it implies that there is a gap between trying to represent and representing, which he takes to be implausible. On the second option, when we seem to represent non-existent concrete entities, we are really just representing something else, such as existent abstract entities (e.g., universals or propositions), existent mental entities (e.g., sense data or ideas), or existent possible but non-actual entities. But Kriegel takes this option to be highly counterintuitive. When we seem to be thinking about concrete flesh-and-blood Bigfoot, we are in fact thinking about an abstract or mental entity. (See, however, Mendelovici 2018, section 9.3.1 for a response to this line of argument.) Another worry is that accounting for the representation of non-existents seems like the wrong kind of reason to accept the existence of these abstract, mental, or merely possible entities.