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Have you ever you looked for a product online and then been recommended the exact thing you need to complement it? Or have you been thinking about a particular purchase, only to receive an email with that product on sale? All of this may give you a slightly spooky feeling, but what you're really experiencing is the result of complex algorithms used to predict, and in some cases, even influence your behaviour.

Long read from the New Yorker on employment statistics. Good economic statistics benefit the left and the right, government and business. Without reliable data, businesses can't take risks on investments. Boeing, for example, decides how many 787 Dreamliners to build and therefore how many people to employ based on its Current Market Outlook forecast, which is rooted in government data and projects aircraft demand for the next twenty years.

When Uber and Lyft first entered the market, offering a ride-hailing service that would come to include tens of thousands of amateur drivers, most major American cities had been tightly controlling the competition. New York City allowed exactly 13,637 licenses for taxicabs. Chicago permitted 6,904, Boston 1,825 and Philadelphia 1,600. These numbers weren't entirely arbitrary. Cities had spent decades trying to set numbers that would keep drivers and passengers satisfied and streets safe. But the exercise was always a fraught one. And New York City now faces an even more complex version of it, after the passage of legislation this week that will temporarily cap services like Uber and Lyft. The city plans to halt new licenses for a year while it studies the impact of ride-hailing and establishes new rules for driver pay. In doing so, it renews an old question: What's the right number of vehicles anyway? The answer isn't easy because it depends largely on which problem officials are trying to solve. Do they want to minimize wait times for passengers or maximize wages for drivers? Do they want the best experience for individual users, or the best outcome for the city - including for residents who use city streets but never ride taxis or Uber at all?

These are uncertain times. The US presidential campaign has been divisive, there is disagreement over Brexit, jitters over China's economy and technology is disrupting traditional labour markets. What is the best way to weather all that uncertainty?

There's one particularly cunning type of pricing strategy that marketers use to get you to switch your choice from one option to a more expensive or profitable one. It's called the decoy effect. Imagine you are shopping for a Nutribullet blender. You see two options. The cheaper one, at $89, promotes 900 watts of power and a five-piece accessory kit. The more expensive one, at $149, is 1,200 watts and has 12 accessories. Which one you choose will depend on some assessment of their relative value for money. It's not immediately apparent, though, that the more expensive option is better value. It's 50% more powerful but costs almost 80% more. It does have more than twice as many plastic accessories, but what are they worth? Now consider the two in light of a third option. This one, for $125, offers 1,000 watts and nine accessories. It enables you to make what feels like a more considered comparison. For $36 more than the cheaper option, you get four more accessories and an extra 100 watts of power. But if you spend just $24 extra, you get a further three accessories and 200 watts more power. Bargain! You have just experienced the decoy effect.

House prices rise, affordability expected to worsen despite property slowdown later this year: CBA By business reporter Michael Janda Updated about 3 hours ago Auction sign on house replaced with sold sign Photo: Sydney, Melbourne and Hobart led gains for the month, quarter and year. (ABC News: Ian Cutmore) Related Story: Property investor borrowing drives credit surge Related Story: Property investors lead home loan surge Related Story: Wealthiest suburbs among most vulnerable to mortgage stress Map: Australia If you thought it was hard to get into the housing market, it may yet get worse unless the Federal Government changes tax policies to reduce investor demand. Key points: Sydney home prices up 16pc over 12 months, Melbourne up 11.8pc CBA economists call for "gradual reforms to both supply and demand issues" Bank regulator likely to intensify investor loan crackdown That is the warning of economists at Australia's biggest mortgage lender, the Commonwealth Bank.

Electric vehicles are better for the climate than gas-powered cars, but many Americans are still reluctant to buy them. One reason: The larger upfront cost. New data published Thursday shows that despite the higher sticker price, electric cars may actually save drivers money in the long-run. To reach this conclusion, a team at the Massachusetts Institute of Technology calculated both the carbon dioxide emissions and full lifetime cost - including purchase price, maintenance and fuel - for nearly every new car model on the market. They found electric cars were easily more climate friendly than gas-burning ones. Over a lifetime, they were often cheaper, too.

Nearly every ad you see online is tailored just for you. These digital ads are powered by vast, hidden datasets that allow advertisers to make eerily accurate guesses about who you are, where you've been, how you feel and what you might do next. While targeted ads may be familiar by now, how they work - and the power they have - often seems invisible. We decided to lift the veil on this part of the internet economy, so we bought some ad space. We picked 16 categories (like registered Democrats or people trying to lose weight) and targeted ads at people in them. But instead of trying to sell cars or prescription drugs, we used the ads to reveal the invisible information itself.