From the archive: an interview with Nobel laureate Sir Roger Penrose (part 2)
The second part of Ian Sample’s 2016 interview with Prof Sir Roger Penrose, which includes a quantum theory of consciousness and the age-old question of whether mathematics is invented or discovered. Help support our independent journalism at <a href="https://www.theguardian.com/sciencepod">theguardian.com/sciencepod</a>