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Comment Not detecting potholes? (Score 2) 289

Google isn't detecting potholes? Back in 1985, we had that on our DARPA Grand Challenge vehicle. The LIDAR on top of the vehicle was generating a ground profile. This was for off-road driving, where that's essential. I'd assumed Google was doing that; they have a Velodyne laser scanner that provides enough information.

In traffic, sometimes you can't see a pothole because it's obscured by a vehicle ahead, but if the vehicle ahead doesn't change speed, direction, or attitude, it's probably safe to proceed over the ground it just covered. On high speed roads, you can't see distant potholes clearly because the angle is unfavorable, but if the road ahead looks like the near road, and the near road profiles OK with the LIDAR, the far road is probably good. That's what the Stanford team used to out-drive their LIDAR range. (We didn't do that and were limited to 17MPH).

Fixed road components should be handleable. People, bicycles, and animals are tough.

Comment Talking to "different" people is bad for you (Score 3, Informative) 76

This is fascinating. It's not the classic "people don't have social lives in the real world because they are on line too much" argument. The authors argue that following people who are "different" from you is bad for you. They write:

"Compared to face-to-face interactions, online networks allow users to silently observe the opinions and behaviors of an immensely wider share of their fellow citizens. The psychological literature has shown that most people tend to overestimate the extent to which their beliefs or opinions are typical of those of others. There is a tendency for people to assume that their own opinions, beliefs, preferences, values, and habits are âoenormalâ and that others also think the same way that they do. This cognitive bias leads to the perception of a consensus that does not exist, or a 'false consensus' (Gamba, 2013)."

"The more people used Facebook at one time point, the worse they felt afterwards; the more they used Facebook over two weeks, the more their life satisfaction levels declined over time. The effects found by the authors were not moderated by the size of people's Facebook networks, their perceived supportiveness, motivation for using Facebook, gender, loneliness, self-esteem, or depression, thus suggesting the existence of a direct link between SNSs' use and subjective well-being."

This is a new result, and needs confirmation. Are homogeneous societies happier ones? Should that be replicated on line? Should efforts be made in Facebook to keep people from having "different" friends?

Comment Re:what could possibly go wrong? (Score 1) 261

Yes, in that case they'll probably be at-fault, which really isn't much consolation when you have to stop everything you were planning on doing to deal with your damaged-ass car. And if you're seriously injured or killed in the accident, that will further ruin your day. And if you're really unlucky, the other driver will not be carrying insurance. The only time I've ever been in an accident that involved another driver, the other driver wasn't. And yes, it was required by law in that state. And yes, my insurance was pretty good about paying for my damages while they were suing the bejesus out of them. Took a month to put my car back together, and the body shop really didn't do a very good job of it. So in general if you can avoid an accident, it's really better to do so, no matter whose fault it's going to turn out to be.

Comment Re:Could have fooled me (Score 4, Interesting) 221

I am canadian, and if we are the most scientiically literate. I really pity the rest of you.

I pity us also. Does Canada have lots of relatively successful* politicians with whackadoodle opinions on climate change, Earth's age, and female reproductive biology?

* In terms of votes, not intelligence ranking.

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