There is a discussion of deep vs shallow hashes. Take Datomic or Datascript for instance. Very shallow datastructures, with a defined schema. Indexes to make th

There is a discussion of deep vs shallow hashes. Take Datomic or Datascript for instance. Very shallow datastructures, with a defined schema. Indexes to make this fast. There’s tradeoffs. Shallow datastructures are under-used. But OOP objects share fundamental flaws with deep hashes. (And add some more.)