Anchor: Economic valuation of benefits often involves estimation of the willingness-to-pay of individuals to avoid harmful health or environmental effects.
Entailed: It's necessary to estimate how much people will pay to avoid negative effects.
Contradiction: The willingness-to-pay of individuals usually isn't taken into account when deciding the economic valuation.
Contradiction: He was slowed down substantially because of his nose. 
Contradiction: Two people are on motorcycles.
Contradiction: Software has reached its saturation point. 
Contradiction: People wouldn't be too happy if they received a letter in the mail demanding them to report somewhere a few days later.