As recently noted, it was my pleasure and privilege on 25 June to give a talk at the ESOF2014 conference in Copenhagen (the EuroScience Open Forum). My talk was one of four, followed by a panel discussion, in a session on the subject “Should science always be open?“. I had just ten minutes to lay out the background and the problem, so it was perhaps a bit rushed. But you can judge for yourself, because the whole session was recorded on video.