In 2006, Matt Damon travelled to Zambia as part of a poverty-awareness trip organised during his visit to the region, a trip he later described in detail to McKinsey, where each day was built around a different issue facing the continent and one day was set aside entirely for water. That single day reshaped how he saw a problem he had, until then, only read about from a distance.
Damon has spoken about that trip many times since, most notably in a 2008 interview with Condé Nast Traveler, where he first laid out the story that would go on to define two decades of his work outside acting. He walked alongside a young girl from the village as she made her daily trip to collect water, the same walk her family had made every day for years just to have enough to drink, cook or wash with. It was not a one-off visit for a photo opportunity, he told the magazine, it was a day spent seeing exactly what the absence of a working tap meant for a child's life.