Apparently the open question is whether you can achieve arbitrarily high ranks. And the username is "ranksunbounded" so presumably the answer is yes, and they're teasing it this way?
Sniffnoy 22 hours ago [-]
I expect the name is more of a joke, not a tease of some result they've yet to reveal.
Apparently the open question is whether you can achieve arbitrarily high ranks. And the username is "ranksunbounded" so presumably the answer is yes, and they're teasing it this way?
By the way, I really like this comment in the previous post that explain the surprise of the new result(s) https://news.ycombinator.com/item?id=49375870