text: This poor support of the argument can be seen from second paragraph. The author describes how the unmanned missions to Venus have only been able to survive for a few hours. It is also stated that "not a single spaceship has touched down on Venus for three decades." No positive effect or example was used leading to the idea that if even unmanned spacecrafts cannot survive than manned spacecrafts certanly cannot survive. This is an example of how the author does not support the claim well.