I can do?", in this case he would only entertain such offers from "very high-end experts in brain chemistry." Discussing his diagnosis at the Bath Literature Festival in early 2008, Pratchett revealed that by then he found it too difficult to write dedications when signing books. In his later years, Pratchett wrote by dictating to his assistant, Rob Wilkins, or by using speech recognition software. In March 2008, Pratchett announced he would donate US$1,000,000 (about £494,000) to the Alzheimer's Research Trust, and that he was shocked "to find out that funding for Alzheimer's research is just 3% of that to find cancer cures." He said: "I am, along with many others, scrabbling to stay ahead long enough to be there when the cure comes along." In April 2008, Pratchett worked with the BBC to make a two-part documentary series about his illness, Terry Pratchett: Living With Alzheimer's. The first part was broadcast on BBC Two on 4 February 2009, drawing 2.6 million viewers and a 10.4% audience share. The second, broadcast on 11 February 2009, drew 1.72 million viewers and a 6.8% audience share. The documentary won a BAFTA award in the Factual Series category. On 26 November 2008, Pratchett met the Prime Minister Gordon Brown and asked for an increase in dementia research funding. Pratchett tested a prototype device to address his condition. The ability of the device to alter the course of the illness has been met with skepticism from Alzheimer's researchers. In an article published 2009, Pratchett stated that he wished to die by assisted suicide, a term he disliked, before his disease progressed to a critical point. He later said he felt "it should be possible for someone stricken with a serious and ultimately fatal illness to choose to die peacefully with medical help, rather than suffer". Pratchett was selected to give the 2010 BBC Richard Dimbleby Lecture, Shaking Hands With Death, broadcast on 1 February 2010. Pratchett introduced his lecture on the topic of assisted death, but the main text was read by his friend Tony Robinson because his condition made it difficult for him to read. In June 2011, Pratchett presented a BBC television documentary, Terry Pratchett: Choosing to Die, about assisted suicide. It won the Best Documentary award at the Scottish BAFTAs in November 2011. In September 2012, Pratchett told an interviewer: "I have to tell you that I thought I'd be a