When I first saw this episode as a YA, I had no idea how gimmicky the twist was. Nor did I realize that Serling committed a major sci-fi writing faux pas when the alien showed how well he could pass himself off as a businessman but didn’t know what it meant to be “wet.”
I still love the twist, though, not from a plotting perspective, but from a character one. It was a life-lesson: no matter how slick you think you are, there’s always someone slicker, so smugness doesn’t pay. And despite the slight tweaks in this adaptation, that lesson remains.