On the left, the notice in Beijing: Because of the "twin meetings" of China's main political bodies this week and next, Internet service will be slow or blocked altogether, online web and video may not be available, and "international TV stations will also be restricted in all public areas during this time."
Two pieces of paper, two of the mentalities and forces at work in this moment's China. One of them is open, except as constrained by forces of the cosmos. The other is defensive and reflexively closed-down. I won't go on and spell out the implications, but this juxtaposition was too neat to resist.
On the general subject of closed-mindedness, I got this answer from a technical-virtuoso reader who is very closely involved in how the Chinese "Great Firewall" works:
Encrypted traffic, especially [a certain protocol] is being focused on. China operates like one big LAN as best they can muster. If they outright block all encrypted traffic they go off the grid and no one is willing to do business there. Their choice? Randomly detect and disrupt encrypted traffic that has a high probability of being non-business traffic. If I were them, I would also be "white-listing" corporate data streams.
So, China is like a company with an IT director bent on stopping anything but official corporate business from being conducted on their network. That's the way to think of it.... China is doing nothing to [foreign] servers directly, but is disrupting the protocols they all use.
Thousands of users can connect to VPNs with no issue in China, so it definitely varies regionally and by ISP.