My point is that I can infer, from the fact that most 1st or 2nd level PCs can recover from any non-fatal injury in a week or two of rest, that none of those non-fatal injuries is evisceration, maiming or even serious damage to joints.First off, the game has never gone into specific details on injuries e.g. evisceration, maiming, etc. Whether or not it should is a different discussion; for now we just have to take it at face value that these things aren't detailed.
Which puts a pretty hard cap on how much wounding is occurring when a PC loses hit points.
How long does it take to regain the favour of the gods?Second, the recovery rate of only 1 h.p. a day doesn't square with Gygax's explanation where he says hit points are a combination of luck, fatigue, injury, and so forth; as fatigue can be dispelled fairly quickly and luck, well, is just luck
But anyway, it's pretty clear that Gygax didn't set the recovery time having an eye on realism. He set it in such a way that, basically, resting takes you out of this week's dungeon expedition. The rules for recovery times need to be read in concert with his rules for how to handle time.
As per the quote I posted upthread, in his PHB Gygax refers to "potential" damage.Then, hit points are actual damage, but in an odd probabilistic sense.
That depends. If what makes one strike in ten debilitating is that a combatant gradually gets worn down, then restoring their resolve and vigour will enable them to "erase" the five strikes that missed.hit point healing should not exist. That it does is a conceit of the game. If one in ten strikes results in debilitating damage, that five strikes occurred but missed should not be erasable.