"The company's engineering staff has grown to 1,200 — a quarter of Uber's workforce — from just 400 people." 1200? I'd be very interested to know what they're

"The company's engineering staff has grown to 1,200 — a quarter of Uber's workforce — from just 400 people." 1200? I'd be very interested to know what they're all doing. Not saying that what the company is doing is easy on that scale, but it's hard to see how throwing a thousand people at the problem can be an effective solution. Unless many of them are working on new products? But Uber seems pretty young to be investing that much in R&D.