Even the statement "Two points intersect in a line," however, can be understood if a point is considered as a set (or "pencil") containing all the lines on which it lies, a concept itself dual to the idea of a line being considered as the set of all points that lie on it.
At the heart of the plan, Mr. Bush said, lies a single concept: more accountability for schools that receive federal money, but considerable flexibility in how those schools meet the stricter standards.
"How can we start with quarks and gluons and get humans and astrophysics and earthquakes?" The answer, he believed, lies in a concept called self-organized criticality.
Another potential explanation for Dr. Lin's new finding lies in a concept known as "cognitive load" that Dr. Tun has explored through her research.
The difficulty lies in a concept of inhabiting which has changed entirely in the space of just a few generations.
The key lies in a concept called a Schottky group, which makes it possible to "add" the boundaries of circles a bit the way one might add numbers.
The truth might lie in a concept known among sex researchers as "the orgasm gap," which explores the unequal distribution of orgasms between men and women.
It requires the most up-to-date engineering to accomplish, but at the end of all the research lies a very simple concept — a paean to the skyward thrust and power of New York.
Today, the markets have a name for the new animal: it is, said analysts at Deutsche Bank in a report published this summer, a "customer hub", offering all sorts of services to people in their homes and on the road.Behind Centrica's disparate activities lies a (fairly) unifying concept: to reduce the hassles of life, and especially the irritations of running a home and a car.
Beyond the glib smokescreen of what Timothy Sandefur calls the "foolish, misguided, politically biased, intentionally misleading nonsense" written about substantive due process lies a serious jurisprudential concept that would have been perfectly familiar to the Framers of both the original Constitution and the Reconstruction Amendments -- and embraced by many of them.
