Father bought me a pair of gloves.
My uncle gave me a pair of shoes.
I have a pair of shoes.
I bought a pair of shoes.
Nancy wants a pair of red shoes.
I've got a pair of sunglasses.
I have a pair of red shoes.
Tom bought a pair of black leather shoes.
Do you have a pair of tweezers?
We should therefore expect more accurate estimates of time and difficulty by a pair programming team than from a solo programming team.