Like most parents, I've been stumped by homework, the big questions, such as: 'What is the point of geography - the pilot always knows where we are going?'. Answer: 'If you didn't know any geography, people would think you were an American, and you wouldn't be able to put them right because you wouldn't know where they live.'
Beautifully shot, impeccably paced, it was a clear, unrelenting look at the National Trust, its friends and enemies, and it makes you want to burn your passport and beg the Luftwaffe to have another go.
Television is a constant stream of fact, opinions, lies, moral dilemmas, plots: an infinitely complex and sophisticated torrent of information. How could it not make you cleverer? The only people who ever thought television rotted the brain and made kids dumb were those with a vested interest in other ways of learning, or those who were intellectually insecure, usually about books.