I know you're out of this conversation, so feel free to not respond, but I'd still like to point out that this is a very excellent example of how Hit Points work in older editions. In fact, I'm going to be referencing this example for years to come, because it's just that good.
When John McClane falls down, he gets hurt. HP damage. That damage then stays on him for the course of the movie. You can see the blood, the scrapes, and the dirty bandages. Over the course of a film, his current HP is steadily wearing down, but he doesn't heal on-screen. Wrapping a serious injury, or having a bullet removed with greasy pliers, doesn't restore any HP. The injury still exists, under the wrap; the bullet wound is still there, even with the bullet removed. And of course he can keep limping along, and firing his gun, because he still has a few HP left - which is established genre convention.
To contrast with later editions, playing that scenario out in 5E would have him hunker down for an hour, and then emerge with all of his wounds perfectly healed. Because, as someone else helpfully pointed out, the only mechanical representation of physical injury is a change in your HP total; if those wounds were still there, then we would see that reflected in the HP total, so the lack of HP damage proves that the physical injury does not exist.