Rate the following argument fragment on its writing, argument, and language skills:
Evidence: For example, "Striving to meet the challenge presented by Venus has value, not only because of the insight to be gained on the planet itself, but also because human curiosity will likely lead us into many equally intimidating endeavors" (The Challenge 8). This evidence is only given in the last paragraph of the article and is not mentioned anywhere else. Also, the author lists many of the dangers of traveling to Venus, but does not dictate why it is worth the risk of exploring the planet.

Score: 2