Joel sternfeld stranger passing

Over a period of fifteen years Joel Sternfeld travelled across America and took portrait photographs that form in Douglas R. Nickel's words an "intelligent, unscientific, interpretive sampling of what Americans looked like at the century's end." Unlike historical portraits which represent significant people in staged surroundings, Sternfeld's subjects are uncannily "normal": a banker having an evening meal, a teenager collecting shopping carts in a parking lot, a homeless man holding his bedding. Using August Sander's classic photograph of three peasants on their way to a dance as a starting point, Sternfeld employed a conceptual strategy that amounts to a new theory of the portrait, which might be termed "The Circumstantial Portrait". What happens when we encounter the other in the mist of a circumstance? What presumptions, if any, are valid? What, if anything, can be known of the other from a photographic portrait?