What about freedom of motion, though? What if someone can't afford to travel to another city, or perhaps they have obligations/attachments in their original city?
...Plane tickets aren't that expensive? Contact a charity or something if you're really stuck.
We recommend not taking on obligations or forming attachments in cities that you intend to leave. It is possible to take on legal or contractual obligations that prevent you from leaving a city, but Providence pays pretty close attention to make sure that's not being abused in some way.
How is the number of representatives per level chosen?
Through lots of smart people thinking about the right number.
Do representatives have to be honest about who they intend to vote for?
...Why would you continue giving your vote to someone who lied to you?????
Is that what "delegate their say" means?
Yes
Still, it seems like that process could continue arbitrarily long, then, since there's no mechanism forcing representatives to vote for popular candidates.
Generally someone becomes a valid choice of a Level n+1 Representative when enough Level n Representatives agree that they'd send their votes to that person if they were a valid choice.
If a city's court is blatantly corrupt, and a thief robs you, and they pay off the city with the money they stole from you, and the city thus finds them not guilty, do you just have no recourse in that situation?
We recommend not moving into cities which have no mechanism preventing them from pulling that sort of thing. "Binding commitment enforced by Providence" is not an uncommon choice of such a mechanism, but... most cities do not make such a commitment, and then proceed to break it?
What is "land value tax" again?
The basic idea is:
1) "Volume on the planet" is a good with precisely zero supply elasticity. This means it can be taxed with zero deadweight loss.
2) Philosophically, no one has any particular claim to physical space. It's not the result of their labor, or anything, it was just... there. So it's pretty justified to take the value of the space and distribute it among the population, instead of just deciding it belongs to some people.
It's a lot of Providence's funding. They also tax domain names on the global internet and a few other things for similar reasons. (Lots of cities do it for electromagnetic frequencies, but those don't need to be allocated globally.) But they also get a decent bit of funding from donations, and there's an occasional service that they request payment for.
They are not completely unwilling to tax things which are less... philosophically justified, if needed. They did when they were going full steam ahead on cryonics infrastructure. But the land value taxes do go pretty far.