What it is
You can invite someone into a universe as a map maker, observer, or guide. Map makers and observers get the invitation in View, accept it there, and can then help build and navigate the universe. A guide gets a personal public link to the landscape, without needing a Relatable account.
Why it matters
When a universe is only yours, it quickly gets too heavy to hold alone — or too closed for anyone else to help. Sending a copy is not the same as letting them in. Then you put off involving them, or you explain everything again each time.
When someone can be invited in and accept where they already receive, you can build and navigate together. You do not have to carry the whole universe alone in your head.