Others’ trails could be applied to materials you already have, so you could see a colleague’s associative structures alongside your own, on the same files. Yes, on a wiki, you can add a link to the text yourself…but that link would appear for _everyone._ There’s no notion of _personal_ associative markup.

nLab is to collect the stable bits, organized, hyperlinked, usefully. ​ Such a far-flung structure is highly vulnerable and, once broken, impossible to restore.

“You should worry about the potential damage that can be done to your business if something were to happen because not enough people were knowledgeable or had the right tools to do their job.”