No, diversity isn't the name of a bar or restaurant or nightclub or coffeehouse or loft or even theater or sports stadium. But it applies to them all and more. And that's the ultimate attraction of a downtown that's alive. With the central city's growth (under those clouds of construction dust), no one or two clubs or eateries can lay claim as the ultimate magnet -- indeed, no one sector or group can do it, either. Our downtown is emblematic of a city that has really come together. Where else does an Astros fan belly up to a bar for a postgame beer and wind up befriending the martini couple closing out an evening after the opera? How about the businesswoman kicking back with the bohemian set? The homeless can even remind the high-rollers about the realities of the world -- something that doesn't happen in The Woodlands. There are plenty of good cafes and bars far away from Houston's heart -- but no outlying area can come close to the variety that underscores downtown's vitality. If the city has any sense, it will protect this diversity that makes a trip into town so delightful and dynamic.