Warning: Undefined array key "visitor_referer_type" in /var/www/vhosts/wordinf.com/core/app/libraries/Core.php on line 98 Michael Halliday - ... language has evolved in the...
... language has evolved in the service of particular human needs ... what is really significant is that this functional principle is carried over and built into the grammar, so that the internal organization of the grammar system is also functional in character.