ELI5: What is the difference between straight through and reverse order on a RJ14 cable.

Because your post isn't asking a simplified conceptual explanation, but rather for an answer, its been removed.

You should try r/answers, r/askreddit or even one of the more specialized answers subreddits like r/askhistorians, r/askscience or others too numerous and varied to mention.

Rest assured this doesn't make your question bad, it just makes it more appropriate for another subreddit. Good luck!