That said, I still doubt actual fluency is obtainable for non-mavens even in the romance languages. In my experience, all early learners have a naive view of their own ability, no matter what the target language is.
RTFA.
The US Foreign Service Institute makes estimates for language difficulties for native English speakers, and they seem to be spot on in terms of comparative difficulty—Russian seems to be taking twice as long as French did for me, and they estimate languages like Chinese to take twice as long as Russian.
I'd seriously doubt if anyone can claim they can learn Japanese to a high level of fluency in a matter of months or even a few years.
I don't agree with this. The way you have to 're-wire' your brain isn't too different from what you do while learning a programming language.
The difficult part of Japanese would be all that vocabulary and all those funny symbols and combinations of symbols.
As a Korean learner, vocabulary is a mountain that I make great progress in scaling, yet my progress seems insignificant compared to the size of the mountain.
And human languages are way more complicated and contrived than programming languages. I don't think you can make a reasonable argument to support that it's the same thing.
Well, that's hard too. But knowing all the words involved makes it a whole lot easier.
I haven't had much success with SRS for Korean vocab. There are so many words that are just too similiar to each other.
> human languages are way more complicated and contrived than programming languages. I don't think you can make a reasonable argument to support that it's the same thing.
I don't claim it's the same thing; I'm just making a comparison. Something like switching from SVO to SOV order isn't particularly difficult for the average programmer. Idiomatic expressions with irregular grammar are going to be problematic, granted.
Are you studying words in isolation or in context? The latter approach makes things much easier.
However, if you're a language maven, then I can see how you can obtain high fluency in a short amount of time (although even the mavens I came across had issue with giseigo/giongo production, figure that out). But don't assume the same technique a maven uses will apply to your everyday person. I've studied Japanese for going on 14 years now (8 of those years being intense study: masters program, study abroad) and the more that I learn the more that I realize that I don't know.