In the long arc of a city's relationship with its team, few moments carry the weight of a first game in a new home. The Buffalo Bills and the people of Western New York reached such a moment Thursday night, as a newly built stadium opened its gates for the franchise's Week 2 home opener — the tangible culmination of years of planning, investment, and anticipation. What unfolds on the field matters, but what surrounds it matters just as much: a region measuring whether the promise of a new building can hold the hopes placed upon it.