Not everybody is on Facebook, yet. So far, Mark Zuckerberg’s social media monolith has only managed to scrape together about 2.3 billion users, roughly one-third of the planet. But as this fascinating documentary revealed, Facebook’s plans are huge and its ambitions boundless.

Tonight comes with a caveat, delivered before proceedings begin by the one-woman show’s writer and performer Nicôle Lecky, who’s sitting in a chair centre-stage. She damaged her foot during Sunday’s matinee at the Brighton Festival, dancing about, and has since had to do the whole thing seated.

“Hey guys, it’s Kayla, back with another video. So, the topic of today’s video is being yourself.” Kayla Day (the wonderful Elsie Fisher, nominated for a Golden Globe and also heard as the voice of Agnes in Despicable Me) is in her last week of eighth grade in upstate New York, compounding the horror of being 13 years old by making self-help YouTube videos in her bedroom. “As always, make sure to share and subscribe to my channel. Gucci!” she signs off chirpily, with Enya’s Orinoco Flow as surprisingly effective background music. But is anyone watching?

One day this all will be over. Give it half a century. In 50 years' time, there will be documentaries in which today’s young, by then old, will explain to generations yet unborn exactly how and why Britain went round the twist in 2016.

“Let’s get a clip, Long Island.” One New York skateboarder encourages another, who’s from the ‘burbs, to show off ollies, pop shuvits and kick-flips for a YouTube video. But hang on: “There are too many penises in the way.” This is a posse of young women, a rare sighting in the male world of the skate park.

The controversial historian Niall Ferguson is the author of some dozen books, including substantial narratives of the Rothschild dynasty, a history of money, and a study of Henry Kissinger up to and including the Vietnam war.

Some feared that turning Gillian Flynn's bestselling novel into a movie couldn't be done, but with Flynn herself in the screenwriter's chair and the clinically precise David Fincher wearing the director's hat, it's turned out a treat. It's long at 145 minutes, but it needed space to accommodate its titillating mix of police procedural, whodunnit, social satire and psychological drama.

At what stage will the trend among journalists and documentarians to regard anything relating to the internet with suspicion or, worse, ignorance come to an end? Although I recognise that my relationship with information technology has never been exactly typical, this stuff has been easy enough to access for more than half of my life now. And I’m not exactly young.

Following a rejuvenating foray back to his one-man-with-a-mike stand-up roots throughout 2009 and 2010, this summer Dave Gorman returned to the Edinburgh Fringe after an eight-year absence to launch Dave Gorman's PowerPoint Presentation. The man who invented the genre of data-heavy, technology-based interactive comedy with Are You Dave Gorman? and Googlewhack Adventure once again found a haven in the Apple Mac and comedy pie chart; could we have been forgiven for thinking that he was playing it just a little safe?

It seems unlikely that the founding fathers of social media had in mind a revolution of any greater magnitude than turning your teenager’s bedroom walls inside out and making themselves rich in the process. Still, here we are, less than a decade later, reeling from a series of very literal revolutions which have, over the past nine months, upheaved a vast tract of the Arab world and recalibrated the definition of people power. Revolutions which, the BBC now claims, were catalysed and facilitated by Facebook.