Mind the Gap
Have you ever travelled on the London underground? In the older Victorian era stations, the new trains don’t quite fit with the platforms. Passengers will hear a cheery voice urging them to ‘mind the gap’. Failure to heed the warning may result in you losing a wallet, a shoe or even half of your leg in the yawing chasm between platform and train entrance. In the gap lies the detritus of 150 years of travel and some enterprising mice with Teflon stomachs. You don’t want to go there.