252 karma · joined July 17, 2015
there are lots of other cleanups happening right now. It's a real pleasure to look at the diffs :)
another thought: you could donate all of it. the perfect money sink. it actually helps, and more of it helps better. so with an altruistic mind you can get motivated with that no matter on which salary level :)
but of course it's true that the further you go up the scale, the more absurd it becomes to talk about serious comfort losses, and there's a point on the lower end where we're talking about actual poverty.
i think it's important to realise that the scale of income has an extreme range and we are already on the upper end and definitely rich by global standards. my personal opinion is that a majority of people living in the western world is actually rich and any complaints on salaries by these are just first world problems.
on a more constructive note, i think i've seen a study that said that higher salary actually does motivate more, but hits the point of diminishing returns at about (i think) 80k or 100k. I don't remember which country and whether it was $ or €, but that should give a sense of the rough order of magnitude.
source (german): https://www.computerbase.de/2017-01/intel-kaby-lake-test-cor...
> Existing structures [abandoned buildings] surrounded by walled compounds of some type were selected because there was little in the environment to use for protection—such as dirt to fill sandbags, earthworks, and existing obstacles.
so that might be part of the reason.
In fact, HN is the one place where i've seen the phrase "I disagree" the most often. Not because people are so disagreeable, but because they openly, and politely, state their disagreement if there is any.
What exactly is the problem with punishing people for risky driving? Or rather, let them pay a corresponding premium to cover for the (statistically expected) higher damages they will cause? Keep in mind that driving behaviour is something the user has full control of, in contrast to e.g. disabilities, for which of course no insurance premium should be paid.
I actually think this is a good idea, and would like to hear opposing opinions.
you could do the same with "normal" cameras (and probably lidar as well) i guess by pointing a laserpointer at it. the safest option is probably to just brake.
here elon musk says they don't use lidar: https://techcrunch.com/2016/09/11/tesla-autopilot-8-0-uses-r...
(as an aside, some years ago we had incidents in the news where people pointed laserpointers at aircraft pilots while landing. the pilot's appropriate response is usually to abort the landing and do a go-around, because that's the safest thing to do in this situation)
So as i read it, the system does think it will collide but ignore it if the whitelist says the object is safe.
The paragraph after that says basically once they have enough data, the system will start braking on unknown objects with gradually increasing force as the confidence level rises. So basically, it will brake on unknown traffic signs but only slightly, as the confidence level shouldn't get too high.
edit: Upon closer reading, he explains it somewhat. Once they have enough data, the system will start braking on unknown objects with gradually increasing force as the confidence level rises. So basically, it will brake on unknown traffic signs but only slightly, as the confidence level shouldn't get too high, if I understand that correctly.
The last paragraph sounds technically challenging and interesting:
"Taking this one step further, a Tesla will also be able to bounce the radar signal under a vehicle in front - using the radar pulse signature and photon time of flight to distinguish the signal - and still brake even when trailing a car that is opaque to both vision and radar. The car in front might hit the UFO in dense fog, but the Tesla will not."
edit: it seems like they are already doing it beginning with this update: "Now controls for two cars ahead using radar echo, improving cut-out response and reaction time to otherwise-invisible heavy braking events". that sounds awesome.
Turns out the ATmega328P has only 8bit registers and the ALU operates on 8bit values. We were using 32-bit datatypes in the conditions, which the ATmega328P loaded and compared byte per byte, each comparison (incl. jump etc) cost us something like 16 cycles.
So yeah, the size of the datatypes definitely mattered for us :)
edit: as an addition, we needed quite a while to figure out (and were quite surprised when we did) that ints are 16bit and longs 32bit on this platform/compiler. i guess this comes down to the general question of explicit vs implicit, and i usually do prefer the former.
i also stumbled over this statement, but i think they are using all telemetry data (e.g. what would the autopilot have done vs what the human actually did) in all accidents, not just fatalities per miles driven.
Overtaking a slow-moving vehicle does probably not allow you to ignore speed limits. And I'm pretty sure you are allowed to ignore speed limits to a certain extend in case of emergencies. I don't want the car to enforce the speed limit by itself, and even if, you could solve that by an "emergency button" of some sort. You'd need to justify it's use when asked by the cops of course.
I also do value freedom and think that absolute safety is not something desirable, but considering the tens of thousands of traffic deaths each year, people apparently abuse their freedom in traffic and we do need more safety there.