54. - On the above suggestions, an apartness thesis could plausibly be supported. 1. Being a language interpreter is sufficient for higher order beliefs and prima facie unique as sufficient source 2. Higher order beliefs are necessary for rationality (-in terms of reasoned, and/or epistemological discourse) 3. Rationality (in said terms) crucially distinguishes x from y ethically, pragmatically, metaphysically... - Isn't this where half of the hard work of an apartness thesis always is anyway? 4. Mature, intact, fully equipped humans are prima facie unique interpreters of language. 5. So, mature, intact, fully equipped humans uniquely possess the necessary conditions of rationality. 6. ...