It's quite common that when scientists publish results that some people don't like (or are later deluded by others into not liking them), they have this strange notion that they can tell why the science is wrong, without even understanding the science in question nor having any kind of experience or background on it. This is really common with all kinds of denialists and conspiracy theorists. Take this guy, for example:
http://www.youtube.com/watch?v=2uPXUC6uiVo
This guy has probably zero knowledge and experience on climatology, or even physics. He studied history and law in college, and later became a politician. He probably has read no actual papers published on the subject of climate change, has no idea how the climate change and its effects are measured, nor how the process of peer reviewing and publication of the results is performed, yet he seems quite confident that he can tell others why the science of climatology is wrong.
It really is true that confidence on one's statements is inversely proportional to how much of an expert on the subject one is.
What I wonder is why people are so eager to believe a few dissenters rather than the scientific community. Why is there such a huge mistrust and hostility towards science? The few dissenters always get people to listen to them, for no obvious good reason, other than that they are dissenting with the "official" explanations. It seems that's enough to get people's attention and agreement. (Of course it helps if the dissenter is charismatic and good at spouting BS convincingly.)
