[OJFord]

I just didn't think it was necessary to be judgemental/'gate-keep' about what's obscure or interesting 'enough' - better to let anyone share what's interested them and why.

To your points, personally I do fall in a 'younger cohort' I imagine; have come across bloom filters on HN way more frequently, and I dimly recall tries from university but I knew them as prefix trees. Without submissions like this one I wouldn't learn what a trie is/to make that alias in my head.