Reminds me of https://steve-yegge.blogspot.com/2008/10/universal-design-pattern.html https://steve-yegge.blogspot.com/2008/10/universal-design-pa... with its o

Reminds me of https://steve-yegge.blogspot.com/2008/10/universal-design-pattern.html https://steve-yegge.blogspot.com/2008/10/universal-design-pa... with its observation that since hash table is O(1), it may mock almost any other data structure.