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riobard

2,848 karma · joined November 10, 2007

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riobard··on The 1.5°C goal of the Paris Agreement is no longer viable
I'm sure temperature ceiling will just work like debt ceiling.
riobard··on The Lightbulb Computer
I don't think the glasses by itself will have much computing power, at least in the near term the primary computing will be offloaded to phones. The glasses should mostly work as a display and position sensors.
riobard··on The Lightbulb Computer
It's still the same old concept of "magic surfaces", using screens, glasses, or projectors (all implementation details) to realize it is irrelevant.

Speaking of implementation details, projecting light on real-world surfaces absolutely sucks for this concept to gain adoption: issues like angular distortion, color accuracy, brightness, and energy efficiency are unsolvable. Don't waste time beating this dead horse (again).

Economy of scale currently favors the screen approach, but it's awkward to integrate multiple screens from different vendors to provide a seamless experience.

Both screens and projectors require multiple units to achieve the demo scenes. Screens would have to be mounted on much more surfaces of the home, while at least one projector is needed for each room. The cost adds up quickly.

That leaves us the only hope with smart glasses. Actually, smart glasses are also a type of projector——casting light not onto real-world surfaces, but directly into our eyes. It has the benefit of requiring just one unit for each viewer, and it could adapt to any kind of space, not limited to just surfaces. It has no inherent shortcomings of angular distortion/color accuracy/brightness. Its energy efficiency is the best and will keep improving. It just needs many more iterations to miniaturize so it can be just the size/weight of normal eye glasses to be unnoticed.

riobard··on Apple and a hacker's future
> There is one aspect in which the Mac is the perfect agent host: Apple has, for decades, invested in a combination of scriptability, automation, and accessibility APIs (these are very often the same thing) that makes it remarkably well-suited to computer use.

It's the software that matters here, not the hardware.

riobard··on Keep Our Servers Running
Maybe they could start a Archive@Home project for volunteers to donate unused disk space for the greater good.
riobard··on Just Bury Your Trash
This is the way to go.

China cracked the pollution issues of burning trash, and built a lot of high-temperature incinerator to burn trash and generate electricity.

The overcapacity leads to a shortage(!) of new trash to burn, and it has started to dig out landfills accumulated from the past decades.

The video from Asianometry is very interesting: https://www.youtube.com/watch?v=AuIEBSb2xiE

riobard··on Transfer files over an Ethernet patch cable
If you haven't yet got any portable drives in the drawer, chances are high that you rarely need to copy large amount of files around anyway. In which case free tier of cloud sync services would be preferred for the majority of users.
riobard··on Transfer files over an Ethernet patch cable
At this particular point in time, yes SSD is expensive. But 5~10Gbps USB 3.0 SSD had been very affordable for a long time before 2025.
riobard··on It takes 5 cloud services to hear my doorbell
what's the latency when someone pressed the button and you hear the bell?
riobard··on Transfer files over an Ethernet patch cable
For the time spent finding the ethernet adapter, plugging the cable, configuring IP addresses, and testing with pings, any decent portable SSD drives should have finished copying tens of GB of data.
riobard··on Apple introduces M6 and M5 Ultra
Unified memory is about address space. The bandwidth is still determined by bottlenecks to the processor. CPU/RAM links are still fairly narrow.
riobard··on Wi-Fi 8 is the first wireless upgrade in years that isn't chasing speed
It's slightly better than the aggregate number :p
riobard··on Wi-Fi 8 is the first wireless upgrade in years that isn't chasing speed
When talking about network bandwidth, it is custom to measure in bit-per-second therefore the "bps" notation. If you convert to bytes, it is highly recommended to use "b/s" notation instead, i.e 150MB/s, to avoid confusion.
riobard··on Wi-Fi 8 is the first wireless upgrade in years that isn't chasing speed
> with Wi-Fi 7 reaching a maximum theoretical throughput of 23Gbit per band

Note to tech reports: do not EVER quote this metric as it is the most useless piece of information.

riobard··on Generic Methods in Go 1.27
> inherited from 10 levels of parent classes

This is not (yet) a thing in Go. Go does not have classes and inheritance. Interface is more like duck-typing.

riobard··on A Practical Guide to SSH Tunnels: Local and Remote Port Forwarding
There's a asymmetry here that "-R" works both for reverse static and dynamic (using SOCKS protocol) forwarding, but "-D" is required for dynamic forwarding which "-L" cannot do.

Why is that?

riobard··on AMD silently removes memory encryption from consumer Ryzen CPUs
Are you sure? I thought it's just AES without any authentication.
riobard··on New 10 GbE USB adapters are cooler, smaller, cheaper
That's exactly the issue. I'm just pointing out that it's a fantasy to hope for simple numbering of max supported speeds will simplify the current USB mess.

It will not.

Consumers would expect plugging a 20Gbps device into a 40Gbps port should result in 20Gbps negotiated speed. In reality it will mostly likely end up at 10Gbps (or less) because of the mess.

riobard··on New 10 GbE USB adapters are cooler, smaller, cheaper
> mark the speed on the USB ports, removing ambiguities

Unfortunately it's not true.

Quiz: what happens when a device capable of 20Gbps is plugged into a port marked as 40Gbps?

riobard··on All phones sold in the EU to have replaceable batteries from 2027
> by the time batteries wear out, most people are going to want a new a phone.

Not true. In recent years smartphones do not advance much, and would be perfectly fine to keep working if not for the dying battery.

> At the very least we'd need to see some data that shows that most people replace batteries when it is possible to do so.

The degree of "possible" varies greatly depending on the available expertise and spare parts. Right now in EU it's cost prohibitive for both coz the special labor required is expensive and almost no official spare parts for consumers. So of coz this will be no data to support your claim.

riobard··on LittleSnitch for Linux
How do you achieve that on macOS then? With PF?
riobard··on SPEAKE(a)R: Turn Speakers to Microphones for Fun and Profit [pdf] (2017)
why is jack retasking a thing…
riobard··on LittleSnitch for Linux
>> The macOS version uses deep packet inspection to do this more reliably. That's not an option here.

I thought it would be easier to do DPI on Linux than macOS. No???

riobard··on LG's new 1Hz display is the secret behind a new laptop's battery life
It just proved the author knows nothing about either technology.
riobard··on Reverse-engineering the UniFi inform protocol
Seamless WiFi roaming is mostly a client decision. The best you can do on AP is to:

a) optimize signal strength for coverage (stronger signals aren't always better in multi-AP deployment);

b) provide hints via 802.11k/v/r to help clients make, hopefully, better decisions;

c) forcefully drop and disassociate clients when signal is weak enough.

But if the client has bad WiFi implementation, there's nothing much you could do.

OpenWRT currently supports 802.11k/v/r, but optimizing coverage by adjusting signal strength and channels is left for experienced users to deal with manually. There is the are where some commercial offerings will do, but the result greatly varies. AFAIK there's no ideal system anyway coz physics is hard.

riobard··on The Israeli spyware firm that accidentally just exposed itself
I used to think that the scenes of the TV series “Person of Interest” were exaggerated for storytelling purposes. Maybe not and it was accurate prescience.
riobard··on How China built its ‘Manhattan Project’ to rival the West in AI chips
China has several teams working on FEL and several experimenting light sources, the latest being built in Shenzhen https://www.iasf.ac.cn/
riobard··on High Performance SSH/SCP
"(sftp) packetizes the data and waits for responses, effectively re-implementing the TCP window inside a TCP stream."

why is it designed this way? what problems it's supposed to solve?

riobard··on The Definitive Classic Mac Pro (2006-2012) Upgrade Guide
I hate the original Mac Pro case so much!!! The metal box is so heavy and the edges of the aluminum top handle is so sharp that you definitely need a pair of heavy-duty gloves to move it around.
riobard··on Europe to decide if 6 GHz is shared between Wi-Fi and cellular networks
OK, can we have 7GHz and 8GHz for Wi-Fi please?
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