One example: an early Rosetta Stone lesson teaches the difference between "he walks" (singular) and "they walk" (plural).
Faye Burdett's death was tragic, but it was also a lesson about the difference between statistics and real people.
This is partly another object lesson in the difference between what people in public life say to the world and the things they think in private.
LONDON — For Hillary Rodham Clinton, arriving here on Tuesday night from The Hague was a lesson in the difference between being a supremely important person and just a very important one.
To Japanese-restaurant regulars, the little dishes at Matsuri look familiar on paper -- oshitashi, boiled spinach in dashi; fluke sashimi with ponzu; yakitori; miso soup with tofu and seaweed -- but Matsuri is a lovely lesson in the difference between good and great.
The work's two pas de deux are less pointless, but on the same program with "Polyphonia," they provided an object lesson in the difference between perverse partnering (lots of feet touching bald heads in Mr. Bigonzetti's case) and a meaningful extension of tradition.
They became riveted as I launched into an impromptu lesson on the difference between retail and wholesale costs, and the concepts of profit and return on investment.
Just before he set off for his US tour, we sat down to get a little lesson on the difference between jungle and garage, and what it's like to be godfather of an entire city's bass scene.
While the dance set to Bach affirms the artist's trust "in the power art has to substitute order for chaos", the two dances together reflect the philosopher's most elementary lesson on the difference between, in Tharp's words, "the way the world should be," and "the way the world is".
While owners and athletes across the country spent the last few years learning expensive lessons about the difference between something that's "natural" and something that's ideal, it turns out that the artificial-turf industry was making its first significant technological advances in 30 years.
