This is peripheral to the real focus of this thread, but it's worth noting
the parallel between objects and closures. You can implement encapsulation
with closures--although it's less useful if without mutability. Scheme was
supposedly designed as a language for exploration of object-oriented
systems.
user=> (defn two-accessors
[n]
(list
(fn [] n)
(fn [] (str n))))
#'user/two-accessors
user=> (def x (two-accessors 25.0001))
#'user/x
user=> ((first x))
25.0001
user=> ((second x))
"25.0001"
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