Comment by fifticon

Such systems help you get the structure of things up into YOUR head, so it becomes a mental ladder for YOU. The main shared network folder for my company is organised like this, it makes it easy to figure out "do we have X/anything about X", and it makes it easy to figure out where to put stuff. We have other systems, e.g. a wiki, but cruft accumulates in the wiki, because no employee can grasp what's in it, the wiki is just a black bag of "lots of stuff someone put in there at some point". Because the clutter isn't visible, nobody feels an urge to clean it up.