The Idea of Universal Grammar

In universal grammar, we have the idea that there are innate constraints on what a language could be. So for example, there are almost zero languages in the world that have the word order, object, subject, verb. If languages were just randomly constructed, then we wouldn't expect to see this type of phenomenon. It doesn't really make sense if we think that languages are just randomly constructed. The idea of universal grammar is that language isn't completely determined by our history and our culture and things like that.