and then exponential growth of online communities happened, which copied those communities and their resources and knowledge, but not things from before that.
so, (and i *overuse* this phrase but its definately the best i can describe for what happens) people spend so much wasted effort reinventing square wheels -- creating not-quite-wrong things for things we already fixed/established/etc
years ago in a better way, but they just dont know it was.
and its a lot of wasted effort and basically misinfo, and, augh