Race, politics, travel plans: things Facebook’s algorithm can’t get right

There’s a whole class of information that Facebook thinks it knows about me and is willing to sell – the problem is their data isn’t entirely accurate

Facebook knows everything about you. At least that’s what we, and the advertisers it sells us to, are constantly told. But a peek behind its algorithmic curtains suggests what it does know might be wrong.

As any of its 1.65 billion users can tell you, Facebook is constantly “updating” its privacy settings, which is why I tool through all my settings every few weeks. I try to keep a lock on what strangers can learn about me on Facebook or have access to; not because I’m disinclined to participate in the platform, but because my family is uncomfortable with strangers having access to their personal lives, and that seems fair.

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Elon Musk’s self-driving evangelism masks risk of Tesla autopilot, experts say

Tesla’s ambitious futurism has earned it loyal fans. But after the death of a driver using autopilot, some say the company should be more explicit about limitations

Elon Musk’s rockets have only ever gone to low Earth orbit, but that hasn’t stopped him from making promises about Mars. The Tesla CEO’s wild, ambitious futurism has earned him billions of dollars, fawning coverage from the tech press, and a subreddit devoted entirely to discussion of his divinity.

But it has also now landed him and his company in the awkward position of explaining why a feature they called “autopilot” should not be to blame for failing to prevent one of their vehicles from driving under a truck in May, killing 40-year-old Joshua Brown – the first known fatality involving a self-driving car.

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On the road: Ikea Sladda bicycle review – ‘Build your own Ikea bike? It’s either a masterstroke or a recipe for disaster’

I worried I’d not screwed everything in tightly enough

‘Ikea to start selling bikes” is a nightmare headline for the friendly independent bike shop. Not only could the Swedish behemoth take any custom the internet hasn’t already siphoned off, but the bike shop will end up having to fix those inevitable DIY bike-building disasters when people who call saddles “seats” are let loose with some Allen keys.

The Sladda comes flat-packed, of course. I set aside an hour to build mine, figuring I know more or less what I’m doing. But an hour wasn’t nearly long enough: I started at noon and finished at five, with time off for lunch. I got stuck three times: first when I put on the front forks the wrong way, next by fixing the kick-stand backwards, so the pedals wouldn’t turn, and finally when I put on the handlebars upsidedown. As ever with Ikea, there are no written instructions, just ambiguous pictures.

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