One argument against open systems is that they become open to everything, good and bad. Like a Richard Meier skyscraper, the anal retentive, Bauhaus elegance of the Mac does prevent the loose ends and confusion of a less sterile environment. But it also prevents fertility. Apple's development must come from within.

Digital time does not flow; it flicks. Like any binary, discrete decision, it is either here or there. In contrast to our experience of the passing of time, digital time is always in the now, or in no time. It is still. Poised.

As a writer and sometime activist who needs to promote my books and articles and occasionally rally people to one cause or another, I found Facebook fast and convenient. Though I never really used it to socialize, I figured it was OK to let other people do that, and I benefited from their behavior.

Facebook has never been merely a social platform. Rather, it exploits our social interactions the way a Tupperware party does. Facebook does not exist to help us make friends, but to turn our network of connections, brand preferences and activities over time - our 'social graphs' - into money for others.

One argument against open systems is that they become open to everything, good and bad. Like a Richard Meier skyscraper, the anal retentive, Bauhaus elegance of the Mac does prevent the loose ends and confusion of a less sterile environment. But it also prevents fertility. Apple's development must come from within.

Many billboards and magazine ads have resorted to showing isolated body parts rather than full-body portraits of models using or wearing products. This style of photography, known in the industry as abstract representation, allows the viewer to see himself in the advertisement, rather than the model.

We've been taught that the renaissance was one of the great golden ages of civilisation. The renaissance was not a golden age, it was the end of a golden age.