Hello, I'm under the sea Until now, the 20-minute undersea journey from England to France has been a strangely peaceful transition between two worlds - a little like falling asleep. The temperature dropped, sound was muffled, the light was dimmed. One could imagine the fishes drifting about overhead and almost detect the radiophonic echo of whale calls. Most soothingly of all, the excited inanities of travellers" phone calls were stilled for a short while. But first the tunnel leading from France was rigged up with capacity for mobiles, and now very soon the same will be done for the outward-bound tunnel. There can be no going back. This is progress and the mobile chatter will be continuous. In any case, the harm is not in the phone links but in the manners of people who yell (or play games that bleep and ping on the devices). So, for an entente cordiale, vive la politesse.