My name is Terry Pratchett, and I write fantasy novels for a living. I am 62 and I was diagnosed with Alzheimer's three years ago. Somtimes, particularly when I'm depressed, I dread what the future may hold. And it occurred to me that, in these modern times, one shouldn't have to fear that sort of thing. I am talking about assisted dying, which is currently not legal in this country. What you are about to watch may not be easy, but I believe it's important. The people that I will meet in this ...