QUOTE(hazzard @ Dec 14 2005, 11:09 AM) [snapback]975104[/snapback]
There are tons of crackpot theories out there wich for there is no credible scientific evidence what so ever.
Sadly, this is very true. Remember, anyone can (and apparently will) put together a good yarn and then insist that it's the absolute truth. Mr. Hoagland is an expert in this type of deceptive reasoning. Now, let's get one thing cleared up, Mr. Hoagland is a public figure who makes his living pandering artifical structures on Mars, alien presence in the solar system etc. To say that his hypotheses, his "theories" if you will, are nonsense (based on belief alone, not solid science) is
not an ad hominem remark. An ad hominem remark would be to attack Mr. Hoagland personally, not his arguments.
What needs to be done regarding the various credulous hypotheses, that are all too common here lately, is to apply a good solid dose of critical reasoning. Carl Sagan's
Baloney Detection Kit offers us a good method for doing this.
QUOTE
Wherever possible there must be independent confirmation of the facts
Encourage substantive debate on the evidence by knowledgeable proponents of all points of view.
Arguments from authority carry little weight (in science there are no "authorities").
Spin more than one hypothesis - don't simply run with the first idea that caught your fancy.
Try not to get overly attached to a hypothesis just because it's yours.
Quantify, wherever possible.
If there is a chain of argument every link in the chain must work.
"Occam's razor" - if there are two hypothesis that explain the data equally well choose the simpler.
Ask whether the hypothesis can, at least in principle, be falsified (shown to be false by some unambiguous test). In other words, it is testable? Can others duplicate the experiment and get the same result?
Now, granted regarding some things it's not possible to to engage in experimentation. However, one can search for confirming evidence, one can strive to reason in a logical and critical manner. If an argument is based on nothing more than assumptions and blatantly lacks any factual corroboration, it's just a bunch of anecdotal observations from people saying it's true because they "say so", then it's just not credible.
Also, study science, real science. This will really help when it comes time to look at someone's argument and be able to know if what they are saying actually "holds water", or is just a belief based on nothing remotely valid or scientifically confirmed.