Rate the following argument fragment on its writing, argument, and language skills:
Evidence: When examining the similarities between Earth and Venus, the author uses the word "probably," saying that "Venus was probably covered largely with oceans and could have supported various forms of life, just like Earth." The word "probably" gives off the impression that the author is making an assumption about the fact that Venus could support life just like Earth based on a common feature between the two planets. It is dangerous to make assumptions about subjects such as this, because it would be very costly if it turned out to be incorrect in the end.

Score: 2