Proof that an Englishman can master Polish declension. The guy speaks 20 languages, though...
He speaks 20 languages and he is ... British. Very impressive!
What srikes me is that he speaks with a perfect rythm and faultless intonation in Polish, even if he makes a grammatical error here and there. This leads me to the conclusion that it is better to master intonation and rythm of the language than its grammar to make a favorable impression in regard to speaking a foreign language.
The point he's making is that one doesn't have to attend any language school in order to master a foreign language. If people fail to master it, it is because they don't know proper methodology to learn a foreign language efficiently and effectively. What David J. James does is diffusing this methodology free of charge across the internet so that anyone who wants to listen may benefit of it. The guy works as an auditor.
Did anyone look in detail into his methodology? And if so, what are your opinions?