The most memorable reporting I've encountered on the conflict in Iraq was delivered in the form of confetti exploding out of a cardboard tube. I had just begun working at the MIT Media Lab in March 2006 when Alyssa Wright, a lab student, got me to participate in a project called "Cherry Blossoms." I strapped on a backpack with a pair of vertical tubes sticking out of the top; they were connected to a detonation device linked to a Global Positioning System receiver. A microprocessor in the backpack contained a program that mapped the coördinates of the city of Baghdad onto those for the city of Cambridge; it also held a database of the locations of all the civilian deaths of 2005. If I went into a part of Cambridge that corresponded to a place in Iraq where civilians had died in a bombing, the detonator was triggered.

When the backpack exploded on a clear, crisp afternoon at the Media Lab, handfuls of confetti shot out of the cardboard tubes into the air, then fell slowly to earth. On each streamer of paper was written the name of an Iraqi civilian casualty. I had reported on the war (although not from Baghdad) since 2003 and was aware of persistent controversy over the numbers of Iraqi civilian dead as reported by the U.S. government and by other sources. But it wasn't until the moment of this fake explosion that the scale and horrible suddenness of the slaughter in Baghdad became vivid and tangible to me. Alyssa described her project as an upgrade to traditional journalism. "The upgrade is empathy," she said, with the severe humility that comes when you suspect you are on to something but are still uncertain you aren't being ridiculous in some way.