The second might be called that of interruptive polyphony (both ultimately subsumable to the larger category of interference form).

The easier it becomes for the public to zip, zap through and avoid interruptive ads through innovative technology like ad blockers and streaming video the madder, and more anxious, the mad men and women grow.

Take, for instance, the role played by the interruptive quality of the radio (Oyvind Fahlstrom's Birds in Sweden, 1962, a sound collage first broadcast by Swedish radio that featured engines and ringing phones as well as human voices and birds in extraordinary onomatopoeic play, is here beautifully installed in a wood-paneled sitting room), the tactility of a dirty poster (or its clawed-at undersides, as in Dufrene's La rose jaune II [The Yellow-Rose II], 1961), or the ponderous weight of a big hunk of meat (Oldenburg's Roast, 1961).

But as $500 billion in global advertising spending hangs in the balance, a handful of businesses are rethinking the old interruptive marketing model and succeeding with a new approach.

The move to get more interruptive follows on the heels of the Online Publishers Association rolling out big new ad units that will take up large chunks of on-screen real estate.

The larger challenge for advertising is to move from an interruptive role to joining conversations.That means advertisers need to find ways to add value to users' experiences, Nielsen found."Whatever the successful ad model turns out to be, the messaging will have to be authentic and humble, and built on the principle of two-way conversation -- not a push model -- that adds value to the consumer," the report said.

But have we seen the last ever year for such interruptive advertising bombardments as we enter the digital on-demand era?

Alexander Vinogradov, Vladimir Dubossarsky, and Alexander Gormatiuk also produced a site-specific Restoration of the Fresco "Fall of Babylon" (1789) by Alexei Zhenikov (2007), a famous frieze based on a fourteenth-century apocalyptic scene by Rublev that has suffered an interruptive, century-long restoration--tapping the mercurial pulse of the moment.

As Paul Brownfield of the Los Angeles Times observed, Eisner was impatient and interruptive and cheerfully bullying."

Those arrows are distracting and often interruptive to the text flow, especially when several appear in the same sentence.

Second, even with the demise of modern "master" narratives, "narratives continue to be told" (61)--but today only "open" narratives (rather than the modern "closed," dominating narrative) are plausible: those that acknowledge irreducible otherness, recognize their limits, and witness to the interruptive truth of alterity through critical praxis.

There begins a parade of beloved character actors and a ripple or two more of interruptive applause.