User blog comment:Simplicityaboveall/Insanely Fast-Growing Functions & Large Numbers - A Simple Construction/@comment-25912386-20181214174408/@comment-30754445-20190221012256

Well, there's nothing wrong with asking.

But asking and then ignoring the answers you get... that's a different story.

Jeez...

(and yes, the function is ill-defined for precisely the reason that P-bot said it is ill-defined)