Which of the following should be the FOURTH sentence after the rearrangement?

Directions: Rearrange the following five sentences in the proper sequence to form a coherent paragraph, and then answer the question:

 
(1) For a while, statesmen are pottering along doing the same thing year in, year out, putting up the tariff one year and down the next, passing appropriation bills and re-codifying laws; they do not stand still.
(2) For a queer effect of responsibility on men is that it makes them try to be as much like machines as possible.
(3) But the routineers are always unprepared. The rulers come to think that they are the apex of human development.
(4) Vast changes, economic and psychological, take place, and these changes demand new guidance.
(5) The system becomes rigid when it is too successful, and only defeat seems to give it new life.