this post was submitted on 06 Jun 2025
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Where does this math come from?
Solving percents. I use this to predict gross and net of my paychecks when I do my budget.
It's also kinda handy when figuring out sales and stuff at the store, sometimes.
I guess the 21 being equivalent to 100 years is just an assumption
it's a generally accepted assumption in many post-Tolkien fantasy works.
Gennerelly accepted where ?
In the USA probably because it's their drinking age
I get the 21 , but I'm not clear about the 100.
before the Internet killed my attention span, I used to read a lot of science fiction and fantasy novels by a variety of authors. Since then, I've watched a lot of anime and read a lot of amateur writing. I don't have specific sources to cite, but the trope is common enough and recurring enough that I stand by my claim of "generally accepted".
if 100 is the age of adulthood then it is equivalent to 18 in human years
close enough
Which kinda makes the math meaningless cause 73 < 100 requires no calculation.
only if you assume the drinking age is 21 or the equivalent. An assumption that is true for a small percentage of population of the world for a small fraction of human history
Which is exactly what the character is doing
No the character just confirms that an equivalent age of 15 is too young. 21 is just the baseline age they use to do the calculation, because it lines up with 100 years in elf years. But the bartender wouldnt have to do the second part of the calculation at all if the drinking age is 21. It could easily be 16 or 17 and the elf would still be too young.