Historian Mat Paskins argues that history can be made real when we bring back to life the excitement which previous generations felt at new developments: to make us, who live in our ancestors' future, feel their wonder when first confronted with future possibility. And he tells the story of two experiments - an ambitious attempt in the eighteenth century to use black sand to make steel, and his own youthful efforts to see if he could eat everything.

Four Thought is a series of talks which combine new ideas and personal stories. Speakers explain their latest thinking on the trends and ideas in culture and society in front of a live audience. It is recorded in front of a live audience at Somerset House in London.

Producer: Giles Edwards.