Interesting aside on rules 7 and 8: many Clojure users (myself included) did not often use namespaced keywords until clojure.spec was released, and in clojure.s

Interesting aside on rules 7 and 8: many Clojure users (myself included) did not often use namespaced keywords until clojure.spec was released, and in clojure.spec, you absolutely need namespacing since specs reside in a global registry. Though in the case of clojure.spec, we typically use the same namespace as our current ns, and there is syntax sugar for this. e.g. ::foo resolves to (keyword *ns* "foo") In Datomic, namespaces tend to represent your application's models, like :person/date-of-birth. I find it very useful mostly for human readability, it offers a way to distinguish what exactly :name refers to in your application's model. It also helps with editor autocomplete since you can type a namespace and see all keys up front, no need to consult a keys spec itself (or the schema of your database in Datomic). And when in doubt, in Datomic, you can always pull, and it is not too hard to run a query that extracts all attributes that exist in your database (this is actually an exercise in Learn Datalog Today[1], highly recommend going through this tutorial yourself if you want to play with databases like Datomic or XTDB). [1] Exercise 2 in https://www.learndatalogtoday.org/chapter/4 https://www.learndatalogtoday.org/chapter/4