People often ask me, How does a PKM system help me?
In my mind, I think about it this way:
Five days from today, a conversation with someone may remind me of something I read/did today, which is useful in that context. I look it up in my exocortex.
Five months from today, I come across an article that seems to trigger a thought related or opposed to that. What do I do, I search for it in my exocortex and update that note.
Five years from now, I may be writing about something and I want to use a quote or snippet. I run a search for related stuff and I get an apt quote/snippet right away.
That’s what PKM means to me: the ability to get in touch with your past selves and also possible future selves.