My problem with this question always is: what do they mean by "learning" a language? Does it mean you just learn the syntax? Does it mean you can write a simp

My problem with this question always is: what do they mean by "learning" a language? Does it mean you just learn the syntax? Does it mean you can write a simple program that works? Does it mean you can write a simple program that works and exhibits the idioms of the language? Does it mean you can write a medium length program without having to refer to api docs? Does it mean you can write a complicated, robust, production quality system in the language? Does it mean all your friends who have a perplexing problem in the language shoot you an email because you know it inside and out? All of these take differing amounts of time to accomplish, and all can fall under learning a language. I think I've learned erlang at least 3 times now. When you say you learned a language in a week or two, what does that mean?