I gave a minimal pair in Korean because they are not allophones in Korean. Your first instinct, “They’re the same picture” was spot on. To an English speaker, they’re the same sound. There are no minimal pairs in English. So… ah forget it. If you don’t get it, you don’t get it.

I just wish people spent more time trying to understand what others mean instead of more time on why they think others are wrong. Isn’t that why we love linguistics to begin with??