if something function when something else changes, then that something depends on that something else
sometimes_change is not good_thing. change is not thing. sometimes_change is good_thing. everything is not one_thing_constantly_changes. change is when_one_thing_becomes_another_thing. space is what_between_else. space is not what_between_else. change is not when_one_thing_becomes_another_thing. thing is substance. everything is one_thing_constantly_changes.