It could be argued that finding the limit of a thing means going at least one beyond the thing, i.e. going over the limit.
This is true of one's personal limitations and limitations to things that are extant.
In Kabbalah 9 and 11 are seen as ominous numbers, for 11 is one above the perfect number 10 (and the 10 sephirotes on the tree of life) and 9 one under.
Conspiracy researcher Mark Passio has therefore pointed out that the date 9/11 by its very nature points to the dark occult.