Recently, I have seen discussions that state that "because" is always a preposition. Can someone shed light on this idea? Thank you.
UPDATE:
The question that prompted me to post this question: Is "which" a preposition? Because because
I posted this question for several reasons:
1) I have seen this topic come up in comments before. I don't remember the original posts that led to the comments...perhaps another user can recall.
2) I could not follow all of the reasoning in the referenced article (Language log) and am hoping a user can bring the discussion "down to earth" for the rest of us mortals.
3) Language is not set in stone, and I have the feeling that other words will soon change use. I think it's important to see how people discuss the words that are changing and to understand these inevitable changes.
4) I think it would help us have a better understanding of ideas such as "preposition" and "Subordinate conjunction" and "conjunction."