But the small changes make big differences. The plates on the buffet line are only eight to 10 inches wide, versus a standard 12 inches, which effectively limits serving sizes. Vegetables always come first on the line, so by the time you get to the meat or the snickerdoodles and chocolate tarts, there’s not much space on your plate. “Spa water,” bobbing with strawberries or cucumbers or lemons, is everywhere — and deliberately more accessible than sugary drinks or even bottled water. A burrito at Google weighed in at about 10 ounces — 60% smaller than the whopping one-pound nine-ounce log filled with similar ingredients that I picked up at a Chipotle near my home in Washington, D.C.