We are indisputably having a David Adjaye moment. A retrospective of the work of the 49-year-old Tanzanian-born British architect just opened at the Art Institute of Chicago. The striking, bronzy shell of the National Museum of African American History and Culture in Washington is now complete. He's mentioned in every article about the competition to design President Obama's presidential library in Chicago. The public spaces of his $84 million Sugar Hill Development in Upper Manhattan, which combines 124 units of affordable housing with an early childhood education center and a children's museum, are finally open. What sets his work apart, both for private clients and the public realm, is the importance of pattern. His work is a saturated, color-laden zig when so many other architects have zagged toward a faux lightness and ethereality.