text: In conclusion, the author contradicts himself a series of times and does not present nearly enough evidence to support his main claim. By using expression such as "was probably" to explain the history of Venus and why NASA should explore it, the author creates a statement based on assumptions and not based on real data. Claims that Venus is a very challenging place to examine closely are consistent throughout the article and the author never discredits them, on the contrary, he reinforces them. With that being said, the author is not consistent and does not make valid claims or statements that make the reader feel the need to support explorations and studies on Venus.If I was arguing with some one that the face on mars was not real and that it was some thing that just happend on its own I think that it could go both ways and that it could of been an alien but it really just probly happend on its own.