Rate the following argument fragment on its writing, argument, and language skills:
Lead: What would you do if you saw what NASA saw on Mars in 1976? In 1976,

NASAs Viking 1 spacecraft was circling Mars, snapping photos of a possible landing site for its sister ship Viking 2, when it spotted the shadowy likeness of a human face. Eventully, scientists figured out that it was possibly just another Martian mesa.

Score: 1