At the same time, though, Baltimore County's public facilities are aging on a scale that is going to require much bigger thinking than this. Mr. Kamenetz says he is looking for a lot of little ideas for solving problems rather than pining for unaffordable big ones, and he asks us to stay tuned. But when he ran for office, he did so with the promise to make Baltimore County the "ideas county." So far, he has focused on one idea, and it's the one that has animated Baltimore County government for years: maximizing efficiency. That is a welcome trait, and one that many other governments would do well to emulate. But given the challenges the county faces, it may not be enough.