Daily Tech Snippet: Tuesday, September 6

• How Uber Drivers Decide How Long to Work: For nearly 20 years, economists have been debating how cabdrivers decide when to call it a day. This may seem like a trivial question, but it is one that cuts to the heart of whether humans are fundamentally rational — in this case, whether they earn their incomes efficiently — as the discipline has traditionally assumed. In one camp is a group of so-called behavioral economists who have found evidence that many taxi drivers work longer hours on days when business is slow and shorter hours when business is brisk — the opposite of what economic rationality, to say nothing of common sense, would seem to dictate. So who is right? That’s where Uber comes in. When one of the company’s researchers, using its supremely detailed data on drivers’ work time and rides, waded into the debate with a paper this year, the results were intriguing. Over all, there was little evidence that drivers were driving less when they could make more per hour than usual. But that was not true for a large portion of new drivers. Many of these drivers appeared to have an income goal in mind and stopped when they were near it, causing them to knock off sooner when their hourly wage was high and to work longer when their wage was low.Whatever the case, the result seems to have one very obvious implication: Anyone trying to make it in the gig economy should probably pick a favorite platform or two and stick with them rather than constantly jump around from one type of gig to another.

• Goodbye, Ivory Tower. Hello, Silicon Valley Candy Store. Silicon Valley is turning to the dismal science in its never-ending quest to squeeze more money out of old markets and build new ones. In turn, the economists say they are eager to explore the digital world for fresh insights into timeless economic questions of pricing, incentives and behavior. “It’s an absolute candy store for economists,” Mr. Coles said. The pay, of course, is a lot better than you would find in academia, where economists typically earn $125,000 to $150,000 a year. In tech companies, pay for a Ph.D. economist will usually come in at more than $200,000 a year, the companies say. With bonuses and stock grants, compensation can easily double in a few years. Senior economists who manage teams can make even more. Businesses have been hiring economists for years. Usually, they are asked to study macroeconomic trends — topics like recessions and currency exchange rates — and help their employers deal with them. But what the tech economists are doing is different: Instead of thinking about national or global trends, they are studying the data trails of consumer behavior to help digital companies make smart decisions that strengthen their online marketplaces in areas like advertising, movies, music, travel and lodging. Tech outfits including giants like Amazon, Facebook, Google and Microsoftand up-and-comers like Airbnb and Uber hope that sort of improved efficiency means more profit.

• Satellite owner says SpaceX owes $50 million or free flight: Israel's Space Communication Ltd said on Sunday it could seek $50 million or a free flight from Elon Musk's SpaceX after a Spacecom communications satellite was destroyed last week by an explosion at SpaceX's Florida launch site. Officials of the Israeli company said in a conference call with reporters Sunday that Spacecom also could collect $205 million from Israel Aerospace Industries, which built the AMOS-6 satellite. SpaceX said in an email to Reuters that it does not disclose contract or insurance terms. The company is not public, and it has not said what insurance it had for the rocket or to cover launch pad damages beyond what was required by the Federal Aviation Administration, which oversees commercial U.S. launches, for liability and damage to government property. SpaceX has more than 70 missions on its manifest, worth more than $10 billion, for commercial and government customers. The space launch company is one of three major transportation and energy enterprises Musk leads. The others are electric car maker Tesla Motors Inc and SolarCity Corp, and Musk faces separate challenges at each of those money losing companies. Spacecom has been hit hard in the aftermath of the Thursday explosion that destroyed the SpaceX Falcon 9 rocket and its payload. The Israeli company said the loss of the satellite would have a significant impact, with its equity expected to decline by $30 million to $123 million. Spacecom shares dropped 9 percent on Thursday, with the explosion occurring late in the last trading day of the week.