Peter L. Galison is Joseph Pellegrino University Professor and Director of the Collection of Historical Scientific Instruments at Harvard University. He is interested in the intersection of philosophical and historical questions such as: What, at a given moment, convinces people that a scientific argument or experiment is correct? How do scientific subcultures—experimentation, instrument making, theorizing—form interlanguages of theory and things at their borders? His books include How Experiments End (University of Chicago Press, 1987), Image and Logic (University of Chicago Press, 1997), and Einstein’s Clocks, Poincaré’s Maps (Sceptre, 2003). Additionally, Peter has several projects examining the powerful cross-currents between science and other fields, including authorship, art, and architecture. With Lorraine Daston, his book Objectivity (Zone Books, 2007) asks how visual representation shapes the concept of scientific objectivity. As a filmmaker, he has explored the broader nuclear world and its consequences for our understanding of time, ethics, and land, in a trio of co-directed films, Ultimate Weapon(2000), Secrecy (2008), and, most recently, Containment (2015).