[22c]

It used to be like clockwork that a Wikipedia article would be submitted to HN shortly after Radiolab covered the same or a closely related topic.

I've also had similar déjà vu moments where something I had only just read about would be submitted to HN.

I think I've also seen the inverse happen, where you see a post about some phenomena on HN and only a few days later some science/IT YouTuber covers the same thing. In those instances I do wonder if that YouTuber was reading HN and thought to make a video about it, or if the HN submitter and the YouTuber had both had their brains tickled by some other source (eg. a podcast).

Sometimes you'll even see things come full circle where that YouTube video itself is then submitted to HN.