2,600 karma · joined January 16, 2013
The original idea of these certs, that they're very valuable long-lived secrets that have to be carefully hand managed and protected, while simultaneously being accessible to your active infrastructure, was always going to be too brittle. The idea of short-lived secrets that are regularly reissued allows for much more robust validation and less catastrophic failure modes.
I'm generally not dogmatic about this kind of thing and think there are often multiple right answers. But short-lived webpki certs are one of those things where if people don't see the value, I'm convinced they're not thinking about security correctly.
An attacker who manages to get a cert provider to mint a new certificate for your domain might be able to appear legitimate, but remember that it's a new cert, not an identical one to the cert you already have. You as the domain owner can easily detect this new cert was created using CT logs and visitors to your site can potentially detect two certs for the same domain depending on whether the attacker can convince them to only visit the spoofed site. Short lived certificates also mean the attacker must execute their new cert attack frequently if they want longer term success.
On the other hand, an attacker who manages to penetrate your impenetrable personal cert management security measures now has the real cert they can use to pretend to be you for as long as your certificate is good for. And unless you detected their one-time break-in, there is no way for you or anyone else to tell this is happening since the attacker is using a cert that matches the real one byte for byte.
Edit: I forgot to mention that short-lived certs are also a response to the general challenge with certificate revocation mechanisms as a reliable way to respond to the unlikely event that you actually detected your long-lived cert was stolen. Even if you figured out an attacker stole your certificate, convincing users to not keep treating it as valid has a lot of interesting failure edge cases. You might just have to wait for its validity period to expire.
Sometimes changes really are bad and are reverted, but more often the changes eventually get accepted and years later everyone involved treats it as an integral part of the sport.
Even "serious fans" almost always seem to be biased by the state of the sport when they started watching. Every change since that point is horrible and misguided, but they rarely argue for reverting changes that happened before then.
The math the person you're replying to was talking about was solar power vs ethanol. While your 800 m^2 sounds like a lot of land area for enough solar panels to fully charge a large electric truck, it's basically nothing compared to how much land area you'd need to grown enough corn to produce enough ethanol to power a similar truck. It's about 500 times as much land area, a fairly obvious result when you consider you get solar power from the land basically every day and corn once a year. Growing plants for ethanol is dumb.
Of course the benefit of a combustion engine is that you don't need to grow corn to make ethanol for it, at least as long as you can get fossil fuels out of the ground and the enemy doesn't disrupt your supply chain for drilling and refining fuel oil. But that's irrelevant since that wasn't the land-use comparison the parent poster was making.
Maybe I'm using it wrong, or maybe the tooling around AI hasn't yet caught up to the capability of AI models. It feels somewhat wrong to me that the benefit any individual person gets from AI is derived from their own prompting rather than autonomous systems that run in the background for them. But either way, the massive investment in AI compute seems very disproportionate to the actual benefit the average person, or even a tech savvy person, is seeing day-to-day right now.
That said, I know a lot of people who have recently installed solar panels on their roof and it's increasingly worth it from a financial perspective. The other thing worth noting though is that while cool, rooftop solar really isn't the best approach to installing solar capacity compared to grid scale solar farms on land which also tends to be abundant in the US.
It's not like the current mix of electrical generation and fossil fuel distribution is some naturally occurring phenomenon or alien technology. It's an enormously complex and interdependent system we built. I'm pretty confident we can build new and different things.
If that was true we'd be getting closer to a point where you could mention "X" without having to further specify what you're talking about, which doesn't seem to be happening any time soon. Maybe more to the point, "Twitter" already had that instant association that Musk totally threw away.
But I actually think changing the branding of the platform was far less dumb than the related necessary changing of terminology associated with using the platform. Twitter managed to associate a unique word for posting on their platform, "tweet", that became widely used and an instantly recognizable reference to using their social media platform specifically even if you didn't mention their name. You could "post" any of a dozen places, you could only "tweet" on Twitter. That's the kind of branding that doesn't happen often and a company would kill for, and Musk threw it away in favor of the same "post" terminology that literally every competitor also uses.
Is that true locally though? Having a golf course nearby your home is better than the golf course just existing somewhere, at least if you play golf, but that is decidedly not true of data centers. You might benefit from at least some of them existing, but derive very little benefit from having one in your backyard and a lot of potential downsides.
That trend of the last several decades has been completely destroyed in the last year or so. Sure you can buy a new computer that might be slightly better than one a few years old, but it will be significantly more expensive to the point where an upgrade is almost certainly not worth it unless money is no object. Even replacing a computer from the pre-AI era would be virtually impossible at anywhere near what it cost you to buy it new unless it was verging on truly ancient by computer standards. Computers have always been a counterpoint to inflation everywhere else, but now that seems to be not only no longer true, but computer costs are inflating significantly worse than other goods.
I find myself increasingly in favor of the movement against data centers. Not because I think data centers are bad on their own, but because of the hording of computing resources they represent and the impact that has on people trying to buy any sort of computing device for their personal use. The PC I built 2 years ago is basically irreplaceable at anywhere near the price I paid for it. That's a truly unacceptable state of affairs in personal computing.
A username/password would be perfectly fine for my use-case as an individual user using Tailscale for my homelab and personal devices. But I suspect the majority of real paying customers don't want a separate authentication flow just for Tailscale and would rather use the SSO they already have. I have confidence Tailscale wouldn't half-ass usernames and passwords is they offered it even if it was mostly just for non-paying hobbyist users, but I'm also sort of glad I get to bucket my account security risk with the people paying their bills.
Building a data center near homes and running your incredibly loud gas turbine generators 24/7 for months, destroying the property values and quality of life for the people living there, is a giant middle finger to the community they've moved into. I'm not saying the backlash banning them entirely rather than adding some additional regulations is entirely logical, but it's very understandable. And should have been eminently predictable.
Or maybe not. Maybe this is a civilizational growing pain these aliens are familiar with. Maybe they went through the same period themselves.
Republican politicians in the US publicly rail against renewable energy because it's red meat for the Fox News crowd, but in reality you see even very Republican states like Utah investing in renewables because economic reality ultimately beats political ideology on stuff like this.
Maybe the worst aspect of renewable energy being turned into yet another political culture war issue is that while renewable energy resources themselves are probably inevitable, the political nonsense surrounding them has helped limit US investment in their development relative to places like China. As a result, the US and the West as a whole is likely to be far more reliant on Chinese technology in renewables than we otherwise might have been.
Instead for probably the first time in the history of computing devices as a consumer product, you're paying significantly more money to get the same thing you could have paid much less for months or years ago. If you bought a computer in 2025, it's unexpectedly an appreciating asset.
Would I rather live in a country run by scientists than deadbeats? Probably. But that's based on the idea that we live in a reasonably free society with social mobility where the difference between scientist and deadbeat is at least partially down to intelligence and work ethic. Hand all the power to the "scientists" though and it's not obvious that distinction would continue to be true past a few generations, because later generations of "scientist" didn't come up through the same free and equal society. I buy that the first generation of all-powerful scientists legitimately will want to turn the grocery store bagger into a future scientist. History suggests later generations will have no such interest.
If I'm a civil engineer designing a bridge, I think it's perfectly reasonable to call someone crazy if their plan is to build it out of Popsicle sticks and unicorn tears. Or more appropriate for this discussion, from the bones of poor people. Wasting time on their nonsense not only makes it harder to reach our actual goal of building a bridge, but reinforces the nonsense notion that all ideas are equally valid or worthy of consideration just because someone voiced them.