User blog comment:Primussupremus/What are the limits of Googology?/@comment-30754445-20170531225910

Since googology is very closely related to the foundations of mathematics, and since our understanding of that is still very sketchy, it is quite obvious that we haven't scratched the surface yet.

But even if that wasn't so, history teaches us that when people claim "we've reached the limits of field X" they are always proven wrong.