scherado wrote:I was providing an example of a self-referential sentence.
Nope. You should have quit while you were ahead, with "this sentence is false".
Saying "I am incomprehensible" is not saying "this sentence is false". The former is just a sentence in the first person present tense of the verb "to be", and the latter is a self-referential sentence. If you really want to get your hands dirty in linguistics, you should get your business straight before you start. If you want to get your hands dirty with recursion, start with recursion.