About the Assimil method. This revolutionary self-study method is based on the simple, effective principle of intuitive assimilation. This is the natural process through which we learn our first language. The methodology uses entertaining dialogues supported by brief notes and simple review exercises to allow you to achieve a level of fluency almost effortlessly. 3 reasons to try the Assimil method : 1 - it has been tried and proven for 85 years ; 2 - it makes it possible to learn a language in a few months. 3 - it is based on a unique learning principle that bas been borne out by cognitive science.