>> Im always amazed how scientists think they know everything, until they suddenly dont. <<
Read Jurassic Park. This was predicted. By scientists (whom Chrichton used as references).
Ah, yes. The book based on the movie. (actually I think it was his second book that was written in such a way as to match the movie from the first book.)
Look, I know that parthenogenesis has been a known principle for many years-- although I wasn't aware that it was found in the shark world as well.
My glee isn't in the fact that science was wrong. Science is a process of discovery, not a collection of facts. My perverse pleasure is in the fact that, once again, people seemed to be stunned by how much they thought they knew, or profess to, but don't.
As Larry Lucido points out, this kind of arrogance isn't limited to scientists, but various religions (and the people who "people" them as well). I would disagree only on the percentage of arrogant people in each group-- I would say it's much higher, both in science and in religion.
As demecleze states: there are dogmatists and free thinkers-- and I would say in any group of people.
What irks me is that dogmatists are the squeaky wheels that get the grease. It's the dogmatists that:
No one is ever censured for it. No one is ever called to account for the problems caused as a result. The same "scientists" that were wringing their hands about global cooling a few years ago, are the (fortunately dwindling) ones preaching global warming today. At least they're hedging their bets now and referring to it as ClimateChange™. Heck, there was even a movie (Day After Tomorrow) about how global warming causes global cooling!
Are eggs good for me today, or bad? I can't remember.