As someone who learns best from experience, my intuition for algorithmic complexity didn't really come from reading about it or solving problems in CS classes (

As someone who learns best from experience, my intuition for algorithmic complexity didn't really come from reading about it or solving problems in CS classes (though that was useful). It came from running tests on my own inefficient code and waiting for it to finish, wondering why my stupid computer was frozen. And then digging in and realizing my O(n^3) or whatever algorithm was not going to be sufficiently fast for production cases.