I was looking up on google why there was an x in RX and TX, and I found this. While maybe it was off-topic and should be in English.SE (Though I think EE makes more sense. At least, the OP will find a better answer here), how could this be marked as "opinion based"?
Even if the answers are opinion based, the "closed" box states the question is what needs to be edited. This doesn't make sense to me - the question is as objective as a question can get. History is true and permanent. Maybe no one knows the history, and thus may create bad answers, but regardless the question itself of "What's the meaning of “x” in RxD and TxD of UART?" just isn't opinion based at all. It's a very explicit and factual question.
If the answers are comments are poor, perhaps require higher reputation to answer. I've seen this implemented before. I just don't believe this should have been marked as "opinion based".
Am I simply misunderstanding the meaning of "opinion based"?