1. You have misunderstood what you have been taught.
2. In the materials you use, 'language' is used in a very broad sense indeed.
3. The materials you are using are suspect.
In the sense that most of us use the word 'language, it is not used for everything.
Let's just take one very crude example. If my wife sees me working in the garden, throwing the spade down and sitting on a bench, she may well bring me out a cold beer. I may smile my appreciation. Or, she may bring out two beers, in which case I will shift my backside from the centre of the bench to one side to give her room to sit down. No language, in the sense that I normally use the word, has been used, but actions have occurred.What has that to do with "'Language is the social underpin of our society, responsible for every action that takes place'?and literacy practices is the 'pattern of activity around literacy'. For example, reading a book that follows a specific set of practices. IE top to bottom, left to right. Most basic.Language is responsible for what? Literacy is clearly a requirement for reading to take place, but I really cannot see what other point you are trying to make.So what I'm trying to say is, language is responsible, through the many different literacy practices we use, and that being literate in the 21st century is a requirement for those actions to take place...It's nothing to do with textbooks. I am trying to make sense of what you are saying.But by the sounds of it, you guys haven't been prescribed the same educational textbooks as me.