“House of Cards,” which is the first show made specifically for Netflix, dispenses with some of the traditions that are so common on network TV, like flashbacks. There is less reason to remind viewers what happened in previous episodes, the producers say, because so many viewers will have just seen it. And if they don’t remember, Google is just a click away. The show “assumes you know what’s happening all the time, whereas television has to assume that a big chunk of the audience is always just tuning in,” said Ted Sarandos, Netflix’s chief content officer.

The producer Glen Mazzara took a similar approach to AMC’s “The Walking Dead” this year. In the second half of the season, which will start in mid-February after a two-month break, “we decided to pick up the action right away — to just jump right in,” Mr. Mazzara said. Fans of the show, he said, have little tolerance for recaps, since many of them will have just watched a marathon of the first half to prepare for the second.

That the fans even have a choice in the matter is a testament to the fundamental changes under way in the television business. Digital video recorders, video-on-demand capabilities and streaming Web sites have given viewers command of what they watch and when, not unlike the way the invention of supermarkets gave food shoppers a panoply of new choices. In both cases, some consumers love to binge.

While a large majority of TV is still watched live, not recorded, the ratings for some series — like FX’s “Sons of Anarchy” — double after a week of recorded viewing is counted. A first-of-its-kind Nielsen study last fall found that a handful of shows gain an extra 5 percent after another three weeks.

Nielsen does not routinely count viewers who wait more than a week to watch an episode, nor does it count most of the viewers who watch online, so it’s hard to estimate the true amount of bingeing. Some hoarders wait years: Mr. Mazzara, for instance, said he’s waiting to watch HBO’s “Girls” until the whole series is over, several years from now. This stockpiling phenomenon has become so common that some network executives worry that it is hurting new shows because they cancel the shows before would-be viewers get around to watching them.