I can't remember another particular instance, but there have been several times where something interesting linked on HN will have another piece of interesting

I can't remember another particular instance, but there have been several times where something interesting linked on HN will have another piece of interesting content related to it which will then also be posted here. It is kind of uncanny that we all have seen this particular video in our recommendations recently. It makes me want to try and create a graph of the connections between all the links.