- There is a single universal way to quantify how good a spell is.
Really surprised that you think I need to make this more clear your entire post is about it.
As a consequence of that, the results of most human attempts at spellmaking aren't as good as the spells that Teclis taught even if they potentially are as good as the average elven spell in general.
It could mean that there's a prevailing belief in the colleges that human made spells are less good in general and not worth the trouble to learn or make.
I kinda get that you're talking about good as a abstraction of power, versatility and teachability. However that doesn't consider reliability, and if you added reliability to the list then I could another trait that you're missing, such as "Can I do this in a mundane way instead of relying on magic". You'll never come up a mix of every possible attribute so it will never be universal.
Secondly I think that a spell that creates a silent illusion and a spell that creates a fireball are not directly comparable so you wouldn't want to use the same definition of good for both. If I were to try and fix your definition, this means that one of your criteria 'versatility' is actually misleading as it's actually some average or sum of how good a spell is in every circumstance it can be applied. Instead power comes out of the definition altogether and instead becomes part of the situational judgement. You mentioned Asqy has like 10 different fire spells but you don't want to be standing next to a campfire you're trying to light if you only know the battlemagics.
Next, every wizard is going to have their own preferences in terms on what they like the balance to look like so it won't be universally agreed what is better than other spells. This can honestly go anyway and can even be systematic, e.g. Teclis needed to create the colleges and teach during war so he over valued teachability compared to the current era where you can have an uninterrupted apprenticeship. Or Teclis was a genius so he overestimated how teachable each spell was and the colleges would generally benefit by having reduced teachability. So even if we can quantify how 'good' a spell is, its still a personal judgement and subject to changing opinions and situations over time so its not universal.
- That the mages who are modifying spells are somehow unaware of the fact that previous mages where also doing this same thing. Or that they are incapable of critical thinking to observe these effects you are predicting.
I could have probably ordered these points better as this follows better after assumptions of modifying. The issue that I am taking here is you are painting a picture of a future where the human mages are seemingly unaware that Teclis didn't teach them everything. Once they know that they can follow through with the same chain of logic that you have made and should come to the conclusion that the average elven spell is 'worse' than the average spell taught by Teclis and therefore although they don't know the difference it should make it apparent that human spell crafting is not as far behind as they might overwise appear.
- Its easier to modify a spell than create a new one and that modified spells retain the same level of 'good'. The only example I can think of for this modification is that LM who made MAP not wind specific, whereas we know Mathilde created 3 spells (2 of which where inspired by other spells)
Perhaps you can clear this up however this:
It could mean that anyone going into spell creation with the plan of "I'll make an improved version of spell X by tweaking some of the details" quickly runs into the problem that all of the details have already been tweaked in very deliberate ways
Seemed to imply that it would create a situation where all spells a Wizard knows are either Teclis taught or modified Teclisian spells. And that spell creation will become limited because the modified spells cannot be modified more.
If so the fact that modified spells are so apparently pervasive and that a mages first thought when it comes to making a new spell would be to modify one itself would be indicative that modifying spells is the best way to make spells.
I assumed because that was that it would preserve the level of 'good' but maybe you thought so for other reasons?
- That there is some inherent limit on how much a spells 'parameters' can be tweaked. And all spells can be tweaked within these parameters without reducing the level of 'good'.
I'm less concerned about limits on modifying spells, I'm generally dubious that modification is at all a common strategy . However I probably wasn't giving you enough good faith here.
- That despite reaching a limit on how to modify spells it some still doesn't become more useful to make new spells.
It could mean that anyone going into spell creation with the plan of "I'll make an improved version of spell X by tweaking some of the details" quickly runs into the problem that all of the details have already been tweaked in very deliberate ways
It could mean that there's a prevailing belief in the colleges that human made spells are less good in general and not worth the trouble to learn or make. It could mean that people who try out spellmaking will tend to have their attempts seem clearly less useful than the spells around them, leading to discouragement from the process.
Look people don't make spells for the hell of it. They do it because they have a problem that needs solving. This is part of the incomparability problem that I mentioned when dicussing the concept of a "good" spell.
If I need to do A, I do not care if another spell exists which is more powerful, more teachable and can do B and C. I would still value the creation of a new spell that does A even if it weaker, less teachable and less versatile because its the only way I can get A done.
This is why Ashqy has that wound searing healing spell even though there are better healing spells in other lores. Bright Wizards cannot access those, the shitty cauterisation spell is the only one they have so they give it value.
Even if I granted that modifying a spell generally gives better results, if it literally cannot make the spell you want, then you just make a new spell whole cloth and its immediately better at solving A than all the other spells that cannot solve A at all.
- That wizards interested in creating new spells are interested in reinventing the wheel rather than creating new spells for problems which Teclis didn't think he had the time to teach.
This is a lot like the above except instead of discussing the utility of inventing new spells to solve new problems its about changing old spells to fix old problems.
It just doesn't seem to be something that wizards do often.
This bit is all supposition but honestly it might be something that Elves did more commonly than humans. As human mages develop personalised masteries it means that their spells are generally somewhat personalised, whereas Elves see a mastery as just incorrectly casting an already optimised spell so they have something of a greater demand for variations in spells to match a magicians personal preference and combat style.
- That somehow the Colleges are dwindling and there is a struggle to prevent spells from dwindling into existence, and that prioritising 'better' spells is somehow bad.
What else am I supposed to read from this:
That could result in all sorts of downstream effects that cause the inherited spells from Teclis to have more prominence.
....
It could mean that when instructors are figuring out which spells they need to make sure to teach people to keep them in living memory and which to put on a scroll and shove into the back of the library they'll tend to choose the second for human spells much more often than elven ones.
except that keeping spells in living memory is a genuine concern.
Further more, given your own assumptions that different spells can be strictly better than others, why would it be a problem?