[pedroaraujo]

A 16 month course of 6 to 7 hours per day with a lot of exercise and you didn't learn the language at all?

I don't think Duolingo is a good solution but in your case you had all the opportunity to become fully fluent with that kind of regime, it starts to be your fault.

[least]

Obviously I knew my language well enough to perform a job which required some amount of proficiency in it. I'd imagine that some people might describe my level of proficiency as fluent. If you were to compare it against university, it'd be around the level of a four year degree, but undoubtedly worse than someone with a master's degree in the language.

I think this is more a case of your definition of being "fully fluent" is vastly different from mine.

[pedroaraujo]

At this point, we are talking about a really high education of a certain language on a thread about a tool to help people going from zero to say basic sentences on another language.

They are two different things. I mean, I am sure that there are academics with superior knowledge than me on my own native language.

[darkerside]

I think this is more of a Dunning-Kruger situation. The more you know a language, the more nuance you recognize and the more you see there is to learn. I only speak English, and I still feel my command of the language could grow.