Anchor: Ideally, developing a cost model for the 20 plus industrial posts would involve collecting data on many individual cost elements from each and using regression analysis to estimate the coefficients of a cost function.
Entailed: A cost model involves data collection using regression analysis to estimate coefficients.
Contradiction: Data collection is not necessary.
Contradiction: It has been bad talking to you. 
Contradiction: The man is holding onto a kite.
Contradiction: There has been little discussion about the risk of premature mortality.
Contradiction: Sparring is taking place in front of onlookers.