Yeah, but these kind of ideas don't really work in the complexity of the real world. If somebody hacks a computer and steals my land title token, we need off-ch

Yeah, but these kind of ideas don't really work in the complexity of the real world. If somebody hacks a computer and steals my land title token, we need off-chain ways of adjudicating that and fixing the database. So we have exactly the same kind of problems, can't rely on the blockchain for actually saying somebody definitely owns something, and may as well just not have bothered with the blockchain... Unless you want to change it so 'code is law' and if you can hack someone and transfer ownership to yourself, then you legally own it. But I think few want to live in that kind of society...