I understand how multiple instances work and how I can subscribe to communities across the fediverse from any instance. I also read that it an instance goes offline, it'll sync up with the other instances when it comes back online.

That got me thinking, it this thing works like that, can't I run an instance on my laptop that'll sync up with the rest of the fediverse every time I open it up.

So if a group of people ran their own in their own laptops, would it work, granted, people end up coming online at the same time