Hey everyone! There are 6 CEFR levels (A1, A2, B1, etc.) for evaluation of language proficiency but I am always struggling with understading my level according to this standard. I found too many different explanations and don't know which one is right. What do you think about these levels? Can you give a brief explanation for them? For example, what should I know on B2 level in average?

Is there a difference between 'air temperature' and 'temperature of air'? I know about 'of' and how/when to use it, but I can't understand why 'air temperature' or something similar is right. Is it some kind of a rule? Or it is just an intuitive thing? :)

The "Super" language of the future. Just imagine that one day people will need to create the "super" language that all people around the world will use in the future. What steps will be first for this? Will be it in the real life? I think the first step is to choose the best linguists, but how they will communicate with each other? It is not trivial because linguists are not the same as polyglots, they don't know a lot of different languages. Therefore translators will be needed for best communication between linguists from different countries but it's not enough to just translate because it is very important to understand every piece of different languages and translators will not be able to do this. Maybe we can create it with some computer programs? I'm not sure about this because it is a very creative process and hard even for people. So what is the right way to the "super" language of the future? Maybe we will leave only one language from existing ones and then will start to create the language of the future? Will we be able to have some special abilities from the "super" language like in the "Arrival" movie?