It is the morning after the internet went offline and, as much as you would like to think you would be delighted, you are likely to be wondering what to do. You could buy groceries with a chequebook, if you have one. Call into work with the landline – if yours is still connected. After that, you could drive to the shop, as long as you still know how to navigate without 5G. A glitch at a datacentre in the US state of Virginia this week reminded us that the unlikely is not impossible. The...