man can dig hole. while digging one hole he finds two holes. he Diggs the one hole till he finds the bottom. climbs up to where he found the two the proceeds down the other hole. till he finds two more holes and then digs to the bottom of the first hole he finds until he hits bottom there. he descends until he hits bottom or digs through the earth. one hole at a time.
the digging is just the way your language constructs itself into different elements spread out like directories and sub-directories.
