This is the second of Historically Thinking’s  yearlong series on the the skills of historical thinking. In our first installment this year, which was Episode 196, we heard cognitive psychologist Daniel Willingham explain reading comprehension, without which none of the other skills really work. Today in the podcast's 200th episode we’re going to tackle Connecting. If we put connecting into the form of a question, it would be something like “How does this document [or any other source, from portraits to shoes to stone walls] fit into a bigger picture?” Connecting joins together information from various sources, near and far from each other. It compares & contrasts, it corroborates testimony, it observes interesting links. Connecting introduces the idea that history is first a way of seeing, before it can become a way of thinking.

There’s no better way to discuss connecting, or any other skill of historical thinking, than to consider an exemplar of that skill. If you were trying to craft a silver teapot, you wouldn’t want to read a book about it, not even a stack of books. You’d want to watch a master craftsman at work, and be able to ask lots of questions; maybe even have a go at it yourself, under their careful and experienced eye. Today’s exemplar is the book The Ghost of Galileo…in a Forgotten Painting from the English Civil War, just published by Oxford University Press. Its author and our guest is John Lawrence Heilbron, Professor of History at the University of California at Berkeley, where he is also Vice Chancellor Emeritus. Professor Heilbron is a native of the Bay Area, and earned both his AB and MA in Physics from Berkeley, before continuing on at Berkeley to take a PhD Degree in the History of Science under the direction of Thomas S. Kuhn. He has also served as Senior Research Fellow at the Oxford Museum for the History of Science, and is an Honorary Fellow of Worcester College, Oxford. His work has ranged across the history of physics and astronomy, from Niels Bohr: A Very Short Introduction (also published by Oxford) to my favorite The Sun in the Church: Cathedrals as Solar Observatories. He now divides his time between Berkeley and west Oxfordshire, where his local is the Rose and Crown in Shilton.