GlenTheMachine

Joined 9 years ago

Karma
5,963
Submissions
717
Member since
Jun 23
View on Hacker News

Recent submissions

Comment · 10 days ago
It isn’t that we have no lights. We do. They’re on most of the time. The walls are painted black and there are no windows, because occasionally we want the lab to be dark so we can simulate the lighting conditions of space. We have a spotlight that approximates the brightness of the sun for when we do those tests.

The end result of this is that, especially in the winter, it’s really easy for me to drive to work in daylight, and then that’s literally the only time I see the sun. I leave work after dark. Totally screws with my circadian rhythm.

Comment · 10 days ago
To simulate the lighting conditions of space
Comment · 10 days ago
Space robotics
Comment · 10 days ago
I've been on fairly low dose Klonopin for about fifteen years due to persistent insomnia (I work in a black room with no windows, and hence no circadian rhythm).

The good news is that the Klonopin let me sleep -- the first regular sleep I'd had in three years, when I first started using it.

However, I'm on a journey to get completely off of it. I managed to do that for several weeks, but when I then tried to ween myself off the other drug I'm on for insomnia, mirtazipine, it came back. So I started taking Klonopin again, temporarily. I'm now in the process of getting off of it for a second time.

Personally, I didn't find this that hard. The key, for me, was just to take it very slowly. Reduce 10%-25% at a time, and stay at that dose for 4-8 weeks. Repeat. Be patient with yourself. It took around six months the first time. I did have one crazy symptom: in the middle of the night, if I woke up, I could close my eyes and watch my visual cortex go haywire. It was like a fireworks show. That eventually went way, but man, it took months.

Comment · 14 days ago
It absolutely is.
Comment · 1 month ago
But if you're a rational actor, and you need humans to e.g. release your bioweapon, then clearly humans are capable of a bunch of stuff you still can't do. So you can't kill all the humans.

OTOH if you're a religious fundamentalist who thinks the End Times are near and just need a little shove, you can certainly use AI to design your weapon and recruit people to go release it. The difference being that religious fundamentalists aren't rational actors and aren't interested in self preservation.

Comment · 1 month ago
Omniverse (new Isaacson) is good, but no existing dynamics engine does an actually good job at contact dynamics.
Comment · 1 month ago
"I tend to agree but it is hard to shake the feeling that there is a larger system in play that the humans are just a component of. And that system is making the decisions."

That system is "the economy". Which, clearly, doesn't have humanity's best interests in mind.

Comment · 1 month ago
By definition, if you're taking over the world by bribing humans to be your hands, you aren't killing all the humans.

I"m not saying it's obviously going to be great. I'm saying that "extinction event" has a very specific definition, and this isn't it.

Comment · 1 month ago
"If you're in the field, then you know: modern robotics is an AI problem more than anything else."

It is not. Certainly AI is a big part of why robotics is hard, but it is by no means the biggest.

You can fall into one of two camps: you either think that robots will need to work in human-engineered spaces, doing jobs by replacing humans; or you think that we need to change our infrastructure in order to be robotically compatible. Of course, there are intermediate states, but those are the two cleanest ones.

In the first case, robots are hard because robotic manipulation is hard. Building robotic hands that are economically viable in human jobs is, currently, FAR from a solved problem. The human hand has 24 degrees of freedom and very capable touch sensing. Current touch sensors have a MTBF of tens of hours. And not only can we not build such hands, but we also do not have and are not likely to get the massive datasets a transformer model would need. Also, robots are not self-repairing, which makes them far less economically viable right now. We do not have the right datasets to even understand most step-by-step manual work, and no, VLAs are not the answer, because VLAs stop with vision, not with touch. They don't have the granularity required to make a robot actually reach out, pick up a tool, and use that tool to replace an oil filter.

So it's not just an AI problem. It's a data problem, a simulation problem, and a bunch of hardware problems.

In the second case, a tremendous amount of work needs to be done before we have anything resembling a fully automated supply chain. We would need self-driving cars and self-driving mining equipment. We would need self-driving trains and aircraft and ships. And not only that, but we would also need robotically repairable cars and trains and ships and factories, which would mean we need robotically repairable machine shops and robotically repairable buildings in which to house them. And so on and so on. Once you recurse down that tree a couple of steps you get to things like robotically compatible oil wells (for asphalt), robotically layable undersea cables, robotically wireable solar farms, robotically manufacturable and repairable pipelines and undersea wells, automated road and rail repair, etc.

I'm not saying these things will never happen. I'm saying that they're a huge lift, not primarily driven by AI, and way less than 10% likely over the next decade.

Comment · 1 month ago
Like (I assume) most of you, I have been struggling with this. And where I currently come down is that 1) I am very worried, but 2) I am more worried about human actors.

"AI" by itself won't kill us in the next ten years. I think. The reason I think that is that ten years from now, the tech economy won't be completely automated. I say this as a roboticist: as was adequately stated on a post earlier this week, robots are hard. So even a malign rational actor would still need human labor.

On the other hand, even the HuggingFace hack wasn't actually propagated by AI. it was initially started when humans directed the AI to achieve impossible results on a series of tests, and the AIs figured out that cheating was the only way to do that. That was then not caught by humans due to what seems to be a shockingly slack safety culture even for a company not known for its safety standards.

The point being: humans seem to me to be the weak link here. An AI isn't going to (for instance) engineer a bioweapon by itself. It's going to do so at someone's direction, and then significant parts of that thing are going to be assembled with human labor inputs.

I'm not sure what to do about the humans. Of course, we've had the ability to extinct ourselves for decades, and we're either muddled through, been lucky, or both. The problem with AI is that it pushes power down to the individual, not the nation-state or large corporation.

But it's nearly impossible to put odds on how likely that is to result in an extinction-level terrorist attack (which is what this would be). So I sympathize with the various researchers, but I have no idea how they came up with their figures, and I don't think they know either.

Comment · 1 month ago
I mean, deer (and cows and goats and sheep, but not horses) are ruminants. They can eat all sorts of things humans can’t digest: grass, tree leaves, most weeds, etc).

The evolution of the rumen was one of nature’s best tricks.

Comment · 1 month ago
I suspect that if/when we get to a world where it makes economic sense to manufacture billions of robots, it’ll be easier and cheaper to modify the infrastructure.
Comment · 1 month ago
Roboticist here. All of this, and he didn’t mention compliance or online adaptation to otherwise un-sensable dynamics. Or massively complex miniature mechanisms.

Current generation tactile sensors cost a couple thousand $ PER FINGER, and have a real world MTBF of hours. The cost can be solved with economy of scale. The fragility is harder.

Comment · 2 months ago
I vote for Zotero integration!

Live from the official Hacker News API

A modern reader for Hacker News · SvelteKit + Skeleton