Can those outside of science credibly speak about science?

There should be a point at which you do not need to have a BA or masters to talk about science, this isn't a research site its a debate site, you shouldn't need to go through 4-6 years of schooling and research work to debate the validity of evolution or sciencesure I think if you are trying to understand some very tricky concepts you should ask an expert in the field, but come on holms if we required a degree no one would debate it but a few people

Sorry Faith but logic is not natural to humanity, or else we wouldn't have to learn to use logic in school, or believe things that have no logical basis.
What we have is a framing that makes sense to us, but our thoughts about things are far from logical. Who said language comes from logic? it comes from need and to express, even language is not logical. it is only logical if it always means the same thing everytime. humans are not born logical they are born just like any other animal with needs that defy logic

I sort of agree with this, someone who knows about how science works, understands the structures and argues correct information should be able to be considered qualifed, but if the person in question has no clue about how science works or cares to learn should not be.

True, many people can parrot information, just ask anyone who got an MCSE during the IT bubble
sure you can't expect someone to produce science in anyway on a forum, but i think you can use the fact that a person who knows what the information means and can form independent thoughts on a subject, like say throwing something at them thats new.
if they can think research and produce something logical, that could define it a bit
as for creationists, some of them can think outside what they are told, but i really can't think of any. It's not that they arn't talking science its more like they come from the stand point of the bible being a science book when it isn't, its hard to argue agenst someone who is basing views on a god

like people being suckered by ID? i think you are right, its hard to say sometimes,i found the best way is to look at it in a logical based way, to see if things follow, then go find the information yourself I think you can learn all you can from sources, but still not be an expert with out having a degree, i think mainly about things are not general science such as atomic physics or testing drugs and radiation on rats.
its the same thing along the lines of teachers, teachers can give you information, but very few teachers are experts on biology the way someone who works in the field is, after all a lot of things in science text books just don't match what science does sometimes