The 75-magnitude, 50-foot radius fire-damage spell doesn't knock you back, and that was the point I was making.
Except that spells have physics enabled for them, even for the actors. Admittedly, there are some gimpy game mechanics attached to it, but I have still blasted people off their feet with a spell before (and they were still alive for a few seconds after getting blasted).
Let's say that Gods are better than mortals, and have the idea for a gun, but never went along with it because they don't need it. If they can create such heavily enchanted primitive weapons that they do far more than a gun ever could why would they make a gun. However, since mortals are nowhere near that powerful, a gun would be a viable alternative.
If we're going to say "Gods knew how to make guns but they didn't need them," then we might as well say, "Gods knew how to make bows, but they didn't need them." The creators, right after creation, were at bloody war with one another. The creators created weapons to aid in that war. If they could have made guns, they would have made them, because they damn-well needed as powerful weapons as they could get to fight each other. And a god-made primitive weapon would still be inferior next to a god-made gun. This is getting rather speculative at best, and grasping for straws at worst.
For starters, you're entire "Endall Gun Debates" post is based largely on the premise that Dwemer would have been the ones to develop gun technology, which is a fallible argument in itself.
And if you had read further beyond that post, you would have read that the thread it was ripped from months back was heavily leaning on the Dwemer being the ones to create guns. The post fits the context for that thread.
Let's say there's a farmer...
Again, speculative. And again, I must ask, "why now?" It's been roughly 6700 years or so between the 4th era and the end of the Dawn. Why now, and not in the earlier times when such need would have been far more drastic and accented?
This bit is a little self-defeating in a couple ways. You state that there's no reason for gun technology because of magic. But then you state bows or crossbows are alternatives for those not skilled in magic. Let's tackle this first; if magic defeats the purpose of guns, why doesn't it defeat the purpose of either bows or crossbows? You also continue to say that there are indeed those not skilled with magic. Which itself defeats the purpose of even mentioning the fact that magic would defeat the purpose for higher technology.
Also, as much as I was criticized for calling early guns relatively simple mechanisms, why should you be given any more leniency for saying that bows or crossbows are relatively simple? The people of Nirn obviously have some ability for technological advancement right off the bat if they've developed bows and crossbows. How strange would the idea of a bow sound to someone who has never heard of one? A piece of wood with a string crossing its ends that fires stones and metal attached to other pieces of wood? In fact, the fact that the inhabitants of Nirn have already developed crossbows makes the idea of a (relatively, to us, anyway) simple gun much more plausible than a bow from not a bow.
As far as the et'Ada, are you implying that they had a hand in the development of technologies that already exist in Nirn? Did they invent the mechanism a crossbow uses?
What you're not seeming to comprehend is my belief, with supporting evidence from lore, that the mortals of Nirn did not invent their weapons. Improved upon base concepts already present, perhaps, but not invented.
Let's start with what's already present in terms of firearms within the world: bows. Now, if we were to apply real-life weapons progression to this, we would naturally conclude that Nirn started with the most basic weapon of all, spears, realized they could be thrown, perhaps moved into throwing stones and using slings as projectors, and eventually came to the propulsion provided by a bent stick with some form of twine. We would be able to conclude that there was a time-period during Nirn where bows did not exist in the slightest.
However, unlike real life, Nirn was created by et'ada, and those et'ada then walked their creation. And when those et'ada walked creation during the Dawn, guess what one of the more famous had with them?
Once again, from the http://www.imperial-library.info/mwbooks/monomyth.shtml#Lorkhan:
"Auriel pleaded with Anu to take them back, but he had already filled their places with something else. But his soul was gentler and granted Auriel his Bow and Shield, so that he might save the Aldmer from the hordes of Men. Some had already fallen, like the Chimer, who listened to tainted et'Ada, and others, like the Bosmer, had soiled Time's line by taking Mannish wives.
"Auriel could not save Altmora, the Elder Wood, and it was lost to Men. They were chased south and east to Old Ehlnofey, and Lorkhan was close behind. He shattered that land into many. Finally Trinimac, Auriel's greatest knight, knocked Lorkhan down in front of his army and reached in with more than hands to take his Heart. He was undone. The Men dragged Lorkhan's body away and swore blood vengeance on the heirs of Auriel for all time.
"But when Trinimac and Auriel tried to destroy the Heart of Lorkhan it laughed at them. It said, "This Heart is the heart of the world, for one was made to satisfy the other." So Auriel fastened the thing to an arrow and let it fly long into the sea, where no aspect of the new world may ever find it."
Gods create world.
Gods are bound to world.
Gods fight other gods in world, and what did these gods who created the world use? A bow.
Not invented over the course of time by mortals, not brought about by progression and development. Presented from the very start in the hands of a god. Did Anu literally give Auriel (/Akatosh/Time) his bow (fairly questionable, as Anu is purportedly a force without sentience)? Or did the Aedra Auriel, who it should be noted had knowledge from before the convention, create the bow himself? It doesn't really matter either way, as either way, it came from the hands of a god.
And if gods are fighting a war, why should they just use bows? Why not axes and maces and swords and crossbows and spears and knives and throwing stars and the rest? Perhaps not all the weapons of the world were brought in by the gods in their Dawn-war, but it's more than likely a significant portion were, at the very least the base archetypes for what currently is what we see in weaponry in Nirn today. As I mentioned earlier, there have been around 6700 years between the end of the Dawn and the start of the 4th era. How is it that they've made almost no significant technological advancements since that time, regarding those weaponry? Unless, of course, such development is impossible or inhibited beyond mortal potential.
Which brings us to another facet of the et'ada debate that ObeseBoyWonder and I are currently engaged in. If gods have the power, opportunity, and prior knowledge to create whatever they will to aid in their war, then why did they not create guns? And further, since mortals are lesser subgradients of the et'ada in all ways, how can mortals be expected to create what gods did not?
EDIT: And if the situation of the et'ada wasn't enough, then let us consider the case of Mehrunes Dagon.
The esteemed Mehrunes Dagon is the Daedric Prince of Destruction, Revolution, Energy, Change,and Ambition, meaning he is literally and completely the embodiment of those concepts.
Guns are the epitome of destruction. They are designed with the sole purpose of killing, wounding, or breaking.
Guns facilitate revolution, as most weapons do. They are used by dissenters and revolutionaries to create power shifts.
Guns are powered by energy, either through chemical processes or, in TES's hypothetical case alchemical or magickal processes.
Guns represent change. They would be both a change to the status quo of magic-users and a change to the world of warfare.
Guns require and fulfill ambition. The ambitious are the only ones who could hope to make it, and the ambitious are the ones who would use it.
It would appear that guns reside well within the spheres of Mehrunes Dagon. It would appear that guns have no choice but to be relevant to Mehrunes Dagon's interests. Yet why is it, then, that the Dremora breaching the liminal barriers and pouring out into Tamriel did not carry firearms? Why is it that firearms are not present within the Deadlands? Why is it that Dagon's followers are not blessed with such destructive weapons? If firearms are metaphysically plausible within the Aurbis AT ALL, then why hasn't Mehrunes Dagon invented them yet? (And before I hear claims of, "He's not too bright," realize that Dagon is a Daedra and is far smarter and swifter than most give him credit for...) If it were plausible for them to exist in the first place, one would think they would almost materialize on the very ground Dagon walks, they are so tied to his spheres. And yet Mehrunes Dagon has no guns. And Mehrunes Dagon has had a loooooong time to contemplate the plausibility of guns.
So if the Prince of Destruction hasn't brought the world firearms, why should a mortal, in a ways lesser than a Daerda, be the one to do it?