A good technology demonstration so wows you with what the product can do that you might forget to ask about what it can't. Case in point: Google's self-driving car. There is a surprisingly long list of the things the car can't do, like avoid potholes or operate in heavy rain or snow. Yet a consensus has emerged among many technologists, policymakers, and journalists that Google has essentially solved—or is on the verge of solving—all of the major issues involved with robotic driving....But what Google is working on may instead result in the automotive equivalent of the Apple Newton, what one Web commenter called a "timid, skittish robot car whose inferior level of intelligence becomes a daily annoyance." To be able to handle the everyday stresses and strains of the real driving world, the Google car will require a computer with a level of intelligence that machines won't have for many years, if ever.
For one thing, it requires carefully crafted maps:
Details, details. How about we create some technology that will allow us to reduce the number of bugs in software by a factor of 10....Google admitted to me that the process it currently uses to make the maps are too inefficient to work in the country as a whole.To create them, a dedicated vehicle outfitted with a bank of sensors first makes repeated passes scanning the roadway to be mapped. The data is then downloaded, with every square foot of the landscape pored over by both humans and computers to make sure that all-important real-world objects have been captured. This complete map gets loaded into the car's memory before a journey, and because it knows from the map about the location of many stationary objects, its computer—essentially a generic PC running Ubuntu Linux—can devote more of its energies to tracking moving objects, like other cars.But the maps have problems, starting with the fact that the car can’t travel a single inch without one. Since maps are one of the engineering foundations of the Google car, before the company's vision for ubiquitous self-driving cars can be realized, all 4 million miles of U.S. public roads will be need to be mapped, plus driveways, off-road trails, and everywhere else you'd ever want to take the car.
H/t Tyler Cowen.