HINENGARO SECURITY GUARD

There is a Bouncer / Security Guard at the doorway to your Hinengaro (like at a pub or night club)

And every second of the day it sorts through 400 million people who want to get in the door! 

But it can only allow 2,000 people to come through at a time!  

How does it sort out which ones come through and which ones don't? 

Well, it has a specific set of RULES that each "thing" must pass through, and nothing can get in the door if it doesn't match the rules that are posted on the pub wall.  You know the ones...