(let
  [g (random/seeded 42)]
  [(random/choose .g [a b c]) (random/choose .g [a b c])
   (random/choose .g [a b c]) (random/choose .g [a b c])])
(let [g (random/seeded 42)] [(random/choose .g [only]) (random/choose .g [1 2.5 three {four 4}])])
(let [g (random/seeded 7)] (random/choose .g [[1 2] [3 4]]))