Contributor(s): Professor Richard Pettigrew, Dr David Jarrett, Nicci Gerrard, Ruth Bright | Many of us will face this important question: over 850,000 people in the UK currently have dementia, and many more will be involved in their care. One of the great strengths of the LSE is its work in decision-theory – but how should we apply decision-theory to those with dementia? How can we figure out the preferences of a person who currently has dementia, whose desires may appear incoherent and ever-shifting? Should we focus on a person’s current desires – or rather on what they ‘would have wanted’ – or indeed what they did want for themselves before dementia took hold? And how should we make room for the needs of carers, and the wider community? To discuss these questions, we bring together a diverse collection of thinkers for a panel-style event, with discussion questions posed by the chair, and regular questions from the audience.