User blog comment:Tachyonic Encrypter/Getting bigger than Rayo's function. Is it possible?/@comment-1605058-20141120055953

This is ill-defined, because it would have to be bigger than itself. Rayo's function is not flawed because of this, because there are inherent limitations, connected with Tarski's undefinability theorem, which makes it impossible to define Rayo's function using FOST.