Segnosaur said:
You're forgetting the 2 most important facts to consider:
#1 - People are morons
#2 - People are lazy
Yes, it would be better if everyone knew the scientific method and how findings are published. But, your average person will hear from their creationist friend "Here is a problem with evolution". If the only response that a scientist makes is "here's how we figure out what happened", the majority of people aren't going to be willing to put the effort into looking up how the creationist's arguments are wrong and the error will go unchallenged.
I agree that this is not something that is very effective. The scientist comes off as evasive.
While I agree that such public debates before a general audience do not resemble the scientific process, it may be one of the only ways that pro-creationist (but ignorant) people can be shown errors in their beliefs.
Unfortunately, this doesn't happen, either. Consider the standard process: creationist throws out a list of nonsense BS that appear to be attacks on evolution. Scientist spends their entire time refuting all the claims, point by point. All the audience sees is that the scientist is on the defensive. Moreover, he has to go through great lengths to explain in detail these complicated things, whereas the creationist statements seemed pretty simple and straightforward.
Now, everything the creationist says is bs, but the audience doesn't have the background to know that. Thus, in the end it is the creationists word against the scientists. The creationist says that "Entropy says that evolution can't happen. You know entropy, it is the thing that says that your room gets messier instead of cleaner." The scientist then goes into a spiel about the basis of the 2nd law and closed-systems, etc, but it doesn't matter. For the audience it is a 50/50 preposition.
The creationist says, "look at these pictures, you can see human footprints right next to the dinosaur prints. Humans and dinos lived at the same time." The scientist says, "Careful analysis of the characteristics of the supposed human footprints show that they only look human because of weathering." You know what the response would be? "See, he admits that they look human. It is only his anti-god scientific bias that makes him deny they are human prints."
The scientist can't win a point by point attack by addressing each point. If you aren't seen as on the defensive, with no basis of your own (isn't that a laugh?), you are going to going to fail because there are too many criticisms for you to handle.
That's why I say a debate is a no-win situation. You can't win by playing the game their way, and you can't win by playing the game the way it should be played. The only solution is to not play their game. If you want to educate people, create your own game.