Piroca asks: "During the last years, a huge amount of (modern) Japanese culture has invaded the Occident, mostly in the form of anime, video games and TV shows. Part of that content can't be understood completely due to the complexity and subtleties of the Japanese language. Due to that, it seems the interest on learning Japanese is steadily growing, specially for anime addicts. Much of the problem stems from the fact that Japanese is not an easy language, being classified as very difficult by most standards (of course, this depends on one's native language). I'm searching for courses and material that can help me to learn Japanese without attending to classes or hiring people to teach me. I've found things like Pimsleur and japanesepod101 but I wonder if other people in the Slashdot crowd have not passed through this process before and have useful hints to share."
We warn the reader in advance that the proof presented here depends on a
clever but highly unmotivated trick.
-- Howard Anton, "Elementary Linear Algebra"