I'm not arguing it's a bad way to learn a language, although I can't see how it will help you pronounce, but that's a different discussion. Quite the opposite,

I'm not arguing it's a bad way to learn a language, although I can't see how it will help you pronounce, but that's a different discussion. Quite the opposite, I'm in deep agreement with the article's assertion that focussing on grammar is counter-productive. 20 common nouns, 20 common verbs, "please" and "thank you", and you're actually able to have a basic conversation. I'm saying that this guy starts off OK, then goes on to devise some code to do that, then declares success apparently without running the code and reasoning about the output. He says that 50 words are 50% - but his script stops at 20? And of those, he lists ten, which are, as others have pointed out, grammar artefacts and stopwords - completely without consequence to getting to read the book in question.