[A smattering of quantum mechanics helps here... "Squgging" is a made-up word for what quantum particles do when they do things like be in two places at once, go through two slits at once, interfere with themselves..... they "just squg"! Also one has to have an "appreciation" of (or at least exposure to!) the sickly-sweet in-house poetry style promulgated every so often by London Underground. --Iain ] "Curiosity stopped the line" Here's a simple little ditty To help you keep us on the move. If everybody learns it Our service might improve. It's very much a struggle To keep curiosity in rein But locating cancels squgging And the delays are such a pain. We've painted all our windows black To help avoid temptation. But people do think "Where are we now?" They want to see which station. If YOU succumb to this desire Just remember the squgger's rhyme: You can know where you are, or where you're going BUT NOT BOTH AT ONE TIME! To spoil the arrival for everyone Is not what you intended. But locating cancels squgging And the service is suspended. So next time you want to take a peek Please don't be such a dunce: You can know where you are, or where you're going BUT YOU CAN'T KNOW BOTH AT ONCE! (c) London Underground 2993