Fifty years ago, coinciding with the centennial of the release of Darwin’s manuscript, author Morse Peckham collected all six editions into a single “variorum” text. Peckham painstakingly created a reference system that denotes the modifications and changes between editions. The text was created by Peckham’s careful enumeration of every sentence from every edition, copied onto index cards; from these cards, he carefully assembled them into a final text.

From the beginning I found myself deeply challenged and stuck — freaked out by the blank page. So I started to use my skills as a filmmaker. I note-carded it. I had the notes above my computer, and I got to do a little “X” when I finished the draft of a chapter; it was this really satisfying moment.