It is said Bell's inequality is a consequence of probability theory, which has nothing to do with quantum or not quantum. There are many papers discuss this issue, but I don't know which one is the original? Where can I find such material? Thanks.
If you search for Bell's inequality on Bing you get much useful information about the origins and and how it relates to the EPR discussion. I assume that is the origin of your
question. Best, David Booth
PS. Now do you mean original paper on the inequality. Original paper on the EPR discussion or ....... ?