5 into 4 best min fragment found: 3/2
  Cut up 5 sticks of length 4 like this:
    1 x (2 + 2)
    4 x (3/2 + 5/2)
  Reassemble as 4 sticks of length 5 like this:
    2 x (5/2 + 5/2)
    2 x (3/2 + 3/2 + 2)