Writing from the stemistry lab
Two plus two ain't four
by Beverley Addy
This equation’s easy
  1 equals you
  1 equals me
  1 plus 1 makes 2, but really 
1 plus 1 is simply 1
  With nothing new added
  To make a 2-sum
  Needs somewhere to get new bits from
Perhaps try
  1 of you
  And 3 of fly
  And that’ll bring number 2 to life