China doesn't need 100% impermeability. As long as it circumvents most people from going outside the firewall, the job is done. Think of it in terms of adblock

China doesn't need 100% impermeability. As long as it circumvents most people from going outside the firewall, the job is done. Think of it in terms of adblocking. You and I know all the tricks, but Google's bottom line suggests most people do not, and don't seem to mind. Similarly, the Great Firewall is tolerated because it doesn't block the things that are necessary for living life in China.