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scarier commented on AWS CEO says using AI to replace junior staff is 'Dumbest thing I've ever heard'   theregister.com/2025/08/2... · Posted by u/JustExAWS
subhro · 6 days ago
Again, just nitpicking, but if you have the right approach speed, and not doing a super short field landing, you need very little wheel brake if any. ;)
scarier · 5 days ago
Sure, as long as you stick to flying light aircraft on runways designed for commercial air transport. I would also recommend thinking about how you would control speed on a long downhill taxi with a tailwind, even if you didn’t need brakes on landing.
scarier commented on AWS CEO says using AI to replace junior staff is 'Dumbest thing I've ever heard'   theregister.com/2025/08/2... · Posted by u/JustExAWS
subhro · 7 days ago
I just can’t resist myself when airplanes come up in discussion.

I completely understand your analogy and you are right. However just to nitpick, it is actually super important to have a weight on the airplane at the right place. You have to make sure that your aeroplane does not become tail heavy or it is not recoverable from a stall. Also a heavier aeroplane, within its gross weight, is actually safer as the safe manoeuverable speed increases with weight.

scarier · 7 days ago
This is a pretty narrow take on aviation safety. A heavier airplane has a higher stall speed, more energy for the brakes to dissipate, longer takeoff/landing distances, a worse climb rate… I’ll happily sacrifice maneuvering speed for better takeoff/landing/climb performance.
scarier commented on Learning Is Slower Than You Think   nisheethvishnoi.substack.... · Posted by u/almost-exactly
scarier · a month ago
Here’s another take: https://www.astralcodexten.com/p/your-review-alpha-school

At the very least it’s an interesting experiment—still unclear if or how well this sort of thing will succeed.

scarier commented on Personal aviation is about to get interesting (2023)   elidourado.com/p/personal... · Posted by u/JumpCrisscross
parsimo2010 · a month ago
I’m going to add a list of things that I think are going to be cool to see:

- New engine options. Previously getting an engine certified was a big expense, so there wasn’t a lot of advancement. Now I think that higher performing Light Sport aircraft can be made with non-certified engines or components. All electronic ignitions, variable valve timing, electronic fuel injection, it’s all on the table now, and it gets to exist in a factory manufactured plane, not just experimentals.

- New avionics. The light sport category got to put some neat digital avionics in their panels because they weren’t certified. They had portable ADS-B transmitters that were legal. These options will now be open to faster planes too.

- Importing light sports from around the world. Lots of European light sport planes couldn’t be imported in the past because they weren’t certified but were too fast for American light sport rules. Now a lot of them will be able to be imported as soon as the rules allow.

- Cheaper complex trainers. Allowing variable pitch props and retractable gear in the light sport category will hopefully mean there will be a plane that comes along that allows you to build time in the complex category without spending the money that usually comes with these types of planes.

- there’s probably a bunch of other things we’ll see that I haven’t thought of, and I am curious to see whatever that is as well.

scarier · a month ago
I really want to believe that MOSAIC will usher in a revolution of safe, affordable airplanes, but I'm not holding my breath. A lot of the stuff you mention has existed for decades in experimental aviation (electronic ignition, EFI/FADEC, non-TSO avionics, the ability to import factory-assembled but otherwise non-certified light sport aircraft...), and none of them seem to offer compelling cost, performance, and safety advantages over legacy systems.

My cold take is that the only significant, short-term effect will be slightly lowered training standards for low-to-moderate-performance aircraft. It's unclear that this will have any practical effects, since personal airplanes will remain prohibitively expensive to own and operate for the vast majority of us.

scarier commented on Personal aviation is about to get interesting (2023)   elidourado.com/p/personal... · Posted by u/JumpCrisscross
oceanplexian · a month ago
Can’t support MOSAIC enough. I’ve owned a composite LSA called a Flight Design for about 5 years, been in arguments with a lot of old timers about the safety aspects but I consider revolutionary and far safer than a certified aircraft than the statistics will tell you.

For example it has a ballistic parachute that will bring the entire aircraft to the ground. Unlike the Lycomings and Continentals the engine wasn’t designed in the 1950s. It’s equipped with real time satellite weather, GPS autopilot, Avionics that would cost you $15-20k to put in a Cessna due to all the red tape.

I will get a lot of heat for this but I think the FAA has killed a lot of people. If pilots had low cost access to things like glass cockpits, satellite weather, inexpensive autopilot, and a healthy ecosystem of cheap, modern aircraft with modern engines (Basic things like fuel injection) a lot of pilots might still be alive right now.

scarier · a month ago
>far safer than a certified aircraft than the statistics will tell you

I share your frustration with the technological stagnation of general aviation, but this is completely damning. Cirrus added all of the features you mention, at great expense and in a fully certified aircraft, and took decades to show any kind of clear safety advantage over clapped-out Cessnas (as I understand it, the vast majority of improvement came from intensive training in when to deploy the parachute, which was wildly less intuitive than anyone originally realized and likely remains so for pilots without specialized training). Digital instruments, weather displays, and automation have significant benefits for many use cases, but it's unclear that they're inherently safer than legacy systems for amateur aviators.

scarier commented on Man wearing metallic necklace dies after being sucked into MRI machine   bbc.com/news/articles/cx2... · Posted by u/brudgers
leptons · a month ago
But MRI machines can't be turned on and shut off that easily. As someone here explained, it takes up to 15 minutes for the magnet in an MRI to "shut down", and costs $50,000 each time.

Why not just control access to the room behind a metal detector? It would be really simple, but effective. I don't think any MRI should be allowed to operate without this basic level of protection.

scarier · a month ago
Sure, an engineering control for MRI room access would be implemented differently--that's just the canonical example that people are familiar with. One possible implementation for MRI access is the airlock method, where the inner access door would only be allowed to unlock with the outer door locked and no metal detected in the space between (also the outer door would be prohibited from unlocking when the inner door is unlocked, except for some kind of inner emergency override that might also be tied to the emergency quench).

Literally no one disagrees with you on this, and most (if not all) hospital administrators will say they already do it the way you suggest. I'm pointing out that the actual implementations I'm aware of are often ineffective because they use administrative rather than engineering controls, and this is a critical distinction people need to be more aware of when interacting with dangerous systems. Managers, at least in my experience, tend to wildly overestimate compliance rates with administrative controls, even ignoring any possibility of deliberate noncompliance.

scarier commented on Man wearing metallic necklace dies after being sucked into MRI machine   bbc.com/news/articles/cx2... · Posted by u/brudgers
leptons · a month ago
I'm not sure what "engineering control" means. Just put it in front of the door to the MRI room. Alarm goes off, you do not get to enter, it should be as simple as that.
scarier · a month ago
An engineering control is how your microwave works—if the door isn’t physically closed, it can’t run. The way many (most?) hospitals currently operate is called an administrative control—analogous to a sign on the microwave door telling people not to run the microwave with the door open or open the door when the microwave is on.
scarier commented on You can now buy eggs from in-ovo sexed hens   optimistsbarn.substack.co... · Posted by u/toomuchtodo
scarier · a month ago
I’m struggling to see the nefarious angle here—-this seems like a case where both ethical and efficiency concerns are well-aligned, for a modest increase in cost that may disappear with scale. How is this anything other than a win?
scarier commented on Man wearing metallic necklace dies after being sucked into MRI machine   bbc.com/news/articles/cx2... · Posted by u/brudgers
leptons · a month ago
You would think a simple metal detector to go through before the lock on the MRI room door unlocks would be a requirement.

I guess maybe the MRI machine might interfere with metal detecting?

scarier · a month ago
Nope, metal detectors are fairly typical for MRI access. They just generally aren’t set up as an engineering control like you suggest.
scarier commented on Man wearing metallic necklace dies after being sucked into MRI machine   bbc.com/news/articles/cx2... · Posted by u/brudgers
ryandvm · a month ago
How hard is it to gate the patient entrance to the MRI with a big-ass metal detector turned up to 11? Why is this still a problem?
scarier · a month ago
This is already a common practice. One of the issues with the standard implementation is that it’s set up as an administrative control rather than an engineering control (which would be significantly more difficult/expensive/space-consuming). At least one other comment thread has discussed the airlock implementation that I’m sure a very large number of people have independently thought of.

u/scarier

KarmaCake day556July 2, 2020View Original