> I think functions growing as fast as Ackermann's don't come up naturally, except on a Googology forum. Apparently I spoke too soon. One problem where Ackerma

> I think functions growing as fast as Ackermann's don't come up naturally, except on a Googology forum. Apparently I spoke too soon. One problem where Ackermann naturally comes up is the Vector Addition Systems [1] just discussed today. [1] https://news.ycombinator.com/item?id=38519944 https://news.ycombinator.com/item?id=38519944