Anchor: But designing a machine to handle the planets and the sun, while a lot simpler, was still a complex problem.
Entailed: It was still complex to design a machine that could handle the planets and the sun.
Contradiction: A machine to handle the planets and the sun was impossible to conceive of.
Contradiction: Chapter 5.
Contradiction: Body Amour appeared instantly in my mind. 
Contradiction: There are animals sitting
Contradiction: I think the kids join gangs in search of self-esteem.