I think they meant that function parameters are vectors when defining a function: (defn foo [arg1 arg2 & rest] ...) As for data-structure literals, it's nic

I think they meant that function parameters are vectors when defining a function: (defn foo [arg1 arg2 & rest] ...) As for data-structure literals, it's nice to be able to write [1 2 3] vs (vec '(1 2 3)) {:key1 "val1", :key2 "val2"} vs (hash-map :key1 "val1" :key2 "val2") Agreed, all pretty minor points, but all nice to have. Function arguments are easily distinguishable and creating maps/vectors is simplified.