Anchor: Err on the side of excess participation-it is costeffective protection against subsequent unexpected and expensive fixes and oversights.
Entailed: Extra participation is an insurance policy against unforeseen expenses down the road. 
Contradiction: Extra work now will only cause more problems later that will be more costly to fix, so don't do it. 
Contradiction: It lasted until the 17th century in the East.
Contradiction: They are dedicated to helping the poor.
Contradiction: A woman is climbing a rock wall without safety ropes.
Contradiction: The man enjoys tobacco smoke.