All Question On One Page true false Experts fully understand how the Hindi language developed. 1 The grammar of dolphin language follows the same rules as human language. 2 Brain size is not the only factor in determining language capability. 1 The language of very young children has something in common with the way our prehistoric ancestors may have spoken. 1 When people started using complex language, their brains got bigger. 2 The role of genetics in language capacity is not yet clear. 1