Many people claim that this or that is irrational, when irrational simply means, not a part of speech, be it a particular grammar in our grammar matrix, or a fundamental error in binary recursion, meaning mistaking a verb for a noun.
Our Grammar Matrix is perfect, however we not not perfectly apply it.
Video alone
https://youtu.be/vfpgqBJQdU8
Video with pdf.
https://archive.org/details/meta-grammar