It will always be up for debate, though. That's the thing--unless you are an absolutist, you will understand that scientific inquiry is a never-ending process

It will always be up for debate, though. That's the thing--unless you are an absolutist, you will understand that scientific inquiry is a never-ending process and that all the "it's settled science" people don't seem to understand that at one time humans thought the earth was the center of the universe and that applying leeches to people helped remove the "ill humours" they were suffering form. All of that was also "settled science." Until it wasn't.