The concept that, like the 6 degrees of separation idea, that every node on Everything is, at most, six links away from every other node. Now, given the amount of links per node, and the number of nodes, the probability this is true might be able to be calculated (as sockpuppet tries in another writeup in this node). However, this only tells us if it is theoretically possible for this to occur or not.

In reality, this is most likely not the current situation. Clicking on random node still seems to have a good chance of putting you in a Webster node that is as yet completely unlinked to the rest of the nodescape. Because this is not a rare occurence, this suggests there are still a significant number of unconnected nodes remaining from the big import of Webster 1913. And because most of the travelling between nodes that people do is via hard link and soft link, these unconnected nodes are not going to be added at a rate that makes complete connection of the nodescape something that will occur soon.

This does not even take into account the nodeshells that are sitting about, also unlinked.

I would suspect that a sizable chunk of the nodescape is connected together, though. The addition of new nodes, assuming that time is taken to properly softlink the new nodes into the nodescape, could help to increase the interconnectedness.