That daftly optimistic Grand Designs chap, Kevin McCloud, has decided to live in a slum for two weeks (Slumming It, Saturdays, 7.30pm, TV3.) Some people will do anything to get away from architects.
He goes, not just to any old slum - surely there was one around the corner in whatever corner of leafy England he lives in - but to Dharvai, the biggest slum in the world where a million people live on top of a rubbish tip and alongside open sewers and drains bubbling with toxic chemical waste and human faeces.
This is what is known as a conceit, or a gimmick, and no television travel show is made without one. Michael Palin was at it with Around the World in 80 Days, and that was broadcast in 1989.
Fair enough - you need some sort of imposed narrative device to tell a story on television, hence Slumming It. And just about everything has been done before (so in 80 Days Palin was following in the footsteps of Phileas Fogg, who took a wager to go around the world in, yep, 80 days. That he was a fictional character in the Jules Verne book just made the jape even jollier.) Anyway, Kev is not following in anyone's footsteps as far as I know - although it is quite likely that Slumdog Millionaire (a fiction shot in part in a real place: Dharvai) was an inspiration. Although why anyone would, for any reason, wake up one day, inspired, thinking: "I know, I'll go and live in a slum for two weeks," is beyond me.
It is entirely possible that he never thought any such thing and that some TV exec woke up one morning and thought: "I know, let's send Kevin McCloud to live in a slum for two weeks. And if we get really lucky a rat'll go up his trousers."