1. 18
  1.  

  2. 2

    aircrafts, helicopter, container ships: You don’t need to know theory to use them. Just turn on the engine and GO!!!

    1. 1

      A more fair comparison would be numbers, vectors and matrices, you certainly need to know a lot of theory to fly, but very little to make use of these objects.

    2. 1

      There is no mention of type class laws in this post. Without these laws, Haskell’s standard type classes are completely meaningless.