Anchor: Having attended two Big Name schools, I know that we can't take anybody's work for granted.
Entailed: I realize we can't peoples' work for granted, having been to some Big Name schools. 
Contradiction: We can take everyone's work for granted, and I've been to four Big name schools. 
Contradiction: It will be fast to switch to metric set.
Contradiction: A person has a shovel.
Contradiction: The man is wearing pants.
Contradiction: That is the hard part.