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qubitcoder

1,648 karma · joined January 9, 2014

[ my public key: https://keybase.io/qubitcoder; my proof: https://keybase.io/qubitcoder/sigs/JVmfDS68RWeEMeqKdcW6ybbYTtRdh_9BV5NBocPaZ70 ]
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qubitcoder··on Tesla Cybertruck payload capacity 29% less than promised
To be fair, Model Y's don't really look like pre-EV sedans. They depart significantly in shape and style: lack of grille for air intake, low drag coefficient, vastly increased cargo space, flush door handles, glass roof, incredible visibility of surroundings from the driver seat (compared to cramped sedans), etc.
qubitcoder··on Nothing's iMessage app was a security catastrophe, taken down in 24 hours
This is not the case. WhatsApp is only prevalent outside the United States and doesn't compare to iMessage in terms of features, privacy, security, long-term storage of messages and media, etc.
qubitcoder··on Grindr Loses Almost Half Its Staff on 2-Day RTO Requirement
On the contrary, I'd argue a web client is important for a number of reasons. Many apps, such as Instagram, aren't properly supported on iPadOS. In this case, a web client neatly solves various usability, window management, and accessibility issues.
qubitcoder··on Displayport: A Better Video Interface
While not specific to DisplayPort, I've been really impressed with the AV Access 8K KVM Switch [1]. 4K at 120Hz without chroma subsampling was a hard requirement.

I use it with macOS Ventura and a Windows 11 desktop. It works nicely in conjunction with a Dell Thunderbolt 3 dock to power an LG OLED and support additional accessories. And it has EDID emulation, which is crucial for maintaining consistent display arrangement.

I've tried other DisplayPort KVM switches with mixed success. This is the first one that's worked out of the box.

[1] https://www.avaccess.com/products/8ksw21-kvm/

[2] https://www.amazon.com/dp/B0BPRZPFM6?

qubitcoder··on How a heat pump works
I didn't quite grasp there was anything other than central air until recently in life (approaching 40). It's been the same everywhere I've traveled and lived across the US. I recall my grandmother's house having a gas floor furnace, which came in handy once during a blizzard.

I was surprised when a colleague from Minnesota who moved to the south mentioned never having air conditioning. I'd expect that in many parts of Europe. And I've sweated it out while living there, but it's extremely rare in my experience in the United States.

I've always had central air, along with a gas fireplace for emergency heat which, thankfully, I've never had to use.

qubitcoder··on Electrify America “fries” EVs at charging stations
On a positive note, the UX continues to improve, especially with the latest update.

I've only used Apple Music briefly since it just came out, but it seems similar to Spotify.

I love that the music controls are now in a dedicated mini-panel on the bottom left of the screen within immediate reach. This is far better than having to reach over to the center of the screen to skip forwards/backward (e.g. during a podcast).

You can also swipe on that same mini-panel to quickly see tire pressure and real-time energy metrics. This is an improvement over the original "swipe cards", which were clunky and undiscoverable.

For rear heated seats, that's a bit tricky from a UI standpoint. Not many vehicles have 3 heated seats in the rear, much less with 3 heating levels.

I imagine Tesla could add physical buttons for rear passengers to adjust the heated seats, e.g. next to the existing USB-C ports. I happened to come across this aftermarket upgrade [1].

At least the front heated seats are a single tap. Or they can be set to auto-mode, which works extremely well in my experience [2].

[1] https://www.youtube.com/watch?v=3hYzXJJ5oaE

[2] https://youtu.be/esjtcjujV54

qubitcoder··on The generative AI revolution has begun–how did we get here?
This is a great article. The author breaks down key advancements in AI--from Nvidia's release of CUDA in 2006, deep learning using CNNs in 2012, followed by recent language translation models and their shortcomings.

The coverage of transformers is particularly well-done, including their novel approach to language translation and their generality.

Quanta Magazine has covered transformers as well [1,2].

[1] Will Transformers Take Over Artificial Intelligence? - https://www.quantamagazine.org/will-transformers-take-over-a...

[2] How Transformers Seem to Mimic Parts of the Brain - https://www.quantamagazine.org/how-ai-transformers-mimic-par...

qubitcoder··on Read this post ‘unless’ you’re not a Ruby developer
Exactly the same here. I write Ruby for a living and use 'unless' where it makes sense or fits with existing code.

That said, when reading code, I often have to pause and mentally translate "unless" to "if not". This is especially true for more complex logic.

Elegant, yes. Additional mental overhead at times, certainly.

qubitcoder··on My building has replaced our keys with an app
Agreed. On a related note, I use these smart bulb dimmers all over the house: https://www.lutron.com/en-US/Products/Pages/StandAloneContro...

They work beautifully with Hue bulbs and HomeKit, as well as offline without WiFi. It also avoids the situation of people disabling smart bulbs by using the physical switch.

qubitcoder··on Tell HN: The ThinkPad X1 Carbon is an excellent MacBook replacement
Unfortunately, while I loved and used ThinkPads for many years, the lack of a 4k or similar hi-DPI screen immediately makes this a non-starter. As does the pitifully poor brightness and color coverage. I’ve never understood how developers could work on a low quality screen after seeing (or using) the first MacBook Pro with a “retina” screen.

That’s not to mention the performance and heating issues that plague every high-end Windows laptop (i.e. the Dell offers 4k screens and above, such as the XPS 17”, but they suffer from thermal issues, suspend issues, and atrocious sound—not to mention being heavy and cumbersome).

Speaking from experience, having used Linux on a laptop as a primary development machine on-and-off for years, you’ll spend many hours of your life trying to fix trackpad issues, suspend and hibernate problems, fan issues, graphic driver hell, boot issues after kernel upgrades, Bluetooth and Wi-Fi “quirks”, etc. And that’s on Dell’s XPS line, not some oddball laptop.

Let me know when there’s a manufacturer that produces laptops with Apple’s XDR screen quality, similar performance, thermals, sound, build quality, reliability, etc., and with the ability to run Linux natively. Competition would be fantastic. Realistically, I don’t see it happening anytime soon.

I do, however, miss the keyboard and “nub”.

qubitcoder··on NASA – Artemis I Liftoff
Same for the U.S. Space & Rocket Center in Huntsville, Alabama. The Saturn V is truly jaw-dropping to see in person, especially as you round the corner and see the gargantuan engines fill your view. The rocket is hung from the ceiling horizontally, allowing you to walk underneath its entire length. An unforgettable experience.
qubitcoder··on NASA’s Webb takes star-filled portrait of Pillars of Creation
That's sad but understandable. The night sky where I grew up is but a fraction of what was visible as a child.

Take a trip outside of well-lit areas if possible. See https://www.darksky.org/ to find a truly "dark" location.

qubitcoder··on 87% of American teens own an iPhone; 88% expect an iPhone to be their next phone
Respectfully, this comment solidifies why iMessage is superior. Try sending a 4K HDR video, or low-quality video, files, or photos with a resolution greater than a Nokia phone from 10 years ago, or a multitude of other things over SMS.

Signal, WhatsApp, etc. don't come close to what iMessage offers seamlessly. For iPhone/macOS/iPadOS users, SMS is garbage. Yes, it's a closed system; but it works without a cell signal or roaming charges anywhere in the world over WiFi for free.

RCS seems like a half-baked attempt at catching up with features that've existed since 2011 on one platform. Even third-party messaging apps fail miserably compared to iMessage.

qubitcoder··on The downfall of smart TVs: From promises of seamless viewing to ad tool
You're not doing anything wrong. I have a 65" LG C9. And nearly everyone at my company has an LG TV. I've never seen or heard anyone mention ads. My parents have used the same TV for several years.

When used with inputs such as cable box, Apple TV, or native apps like Netflix, Amazon, etc., everything works as expected.

I'm genuinely confused as to what people are referring to. The last ads I saw were in the Peacock app to watch Parks and Recreation (and they were surprisingly non-obtrusive mainly Apple and EV ads). But I didn't have a subscription--the ads weren't coming from the TV.

I purchased a high-end Samsung TV in 2011. That was my last Samsung purchase ever. I also had a Sony X900F, and suffice it to say, I'll never purchase another Android-based TV (the UI was slow unresponsive garbage, unintuitive, and user-hostile). The actual TV itself was of decent quality but hamstrung by its operating system.

In general, unless something has changed, stick with LG.

qubitcoder··on We're going to need a lot of solar panels
Most people know that hot air rises. It's helpful to think of airflow in terms of energy (temperature is a measure of the average kinetic energy of air molecules).

Hotter air has more energy and thus will naturally "flow" towards cooler areas with less energy until equilibrium is reached.

In this example, the higher temperature air holds more moisture. That moisture will be carried along and dispersed towards the cooler wall, where it could condensate.

qubitcoder··on BMW heated seats subscription costs $18 per month in South Korea
Absolutely. I've had my Model Y for about 1.5 years (14,500 miles). Recently, I've had to replace the rear tires due to slow pressure loss. Supporting 5,000 pounds certainly increases wear and tear; alas, they don't come cheap [0].

At least the "run-flat" design is worth it for long road trips, the ability to re-inflate, and increased storage space.

[0] https://tsportline.com/products/continental-procontact-rx-25...

qubitcoder··on The local news crisis is deepening America's divides
I can assure you there are many people who reside in MTG's district and find her deplorable, reprehensible, and an embarrassment--both locally and nationally.

Source: I live in her district. And work for an outstanding software company that's headquartered there.

qubitcoder··on Judge orders trial in Tesla autopilot manslaughter case
Teslas most certainly read speed limit signs. They have for years now. My stock Model Y purchased in January 2021 had the feature built-in.

With FSD beta, turning off a major highway onto my neighborhood street (very narrow and no lane markings), it defaults to 25 MPH. About 100 feet later, the car sees the 35 MPH sign and speeds up accordingly. In this case, 35 MPH is too fast given the curves, slight hills, and limited visibility. I slow down manually in these cases using the roller wheels.

Tesla has gradually improved its speed planning to account for different scenarios. But it's still a work in progress and often requires manual tweaking.

qubitcoder··on Please stop disabling zoom
No, this is actually "Safari on iOS" isn't broken, and allows the user to remain in control (thankfully).
qubitcoder··on Things I can’t do on macOS which I can do on Ubuntu (2020)
Yes, iTerm2 is one of the best macOS apps. It's the first thing we have new developers install if they're new to macOS.

On the 120Hz MacBook Pros, there's an advanced iTerm2 setting that lets you change the maximum frame rate to 120 or above (adaptive frame rate also needs to be disabled).

For monitors with a high refresh rate, it's worth checking out. You can see the difference by running:

  $ cat /dev/random | hexdump
qubitcoder··on Are you nice or kind?
Very well said. Just a small addendum.

As someone who grew up in the south, I'd just like to mention that "Bless Your Heart" could be used in a derogatory manner.

But, most often, it's used to express genuine concern for someone going through a tough time.

So, don't automatically assume it's an insult :-).

qubitcoder··on Reinstating our SAT/ACT requirement for future admissions cycles
I'm not so sure about that. About 20 years ago, counselors advised taking the SAT/ACT only once, since your score wouldn't really change.

I took the SAT several times. Each time my score went up significantly. My high school ended up creating a new award category for "greatest score increase", or something to that effect. I believe it was ~200 points.

I'd taken a prep course being offered by a local instructor. However, the biggest benefit was from dedicated self-study (Kaplan books, as I recall).

qubitcoder··on Show HN: Oh-heck, a terminal command for when you forget other terminal commands
Slightly related is https://cheat.sh/ [0], which returns real-world examples of how to use a given command.

The results are nicely formatted and color-coded. Give it a try in your terminal:

  curl https://cheat.sh/rsync
I've found it to be really handy for things like awk, rsync, ssh, and others with byzantine parameters. Not to mention it's free.

[0] https://github.com/chubin/cheat.sh

qubitcoder··on Tesla fired an employee after he posted driverless tech reviews on YouTube
This isn't accurate. There's an option to purchase the FSD package upfront or pay a monthly subscription (just a couple of taps on the phone app).

Either option enables Enhanced Autopilot with summon mode, automatic lane changes (configurable), navigation on autopilot (i.e. autopilot on interstates that can handle entrance and exit ramps).

If you've paid upfront, or have a subscription, you can now request access to the FSD Beta by tapping a button on the car's display.

Once agreeing to the conditions, your driving will be monitored and measured based on various characteristics. After each trip, a detailed safety score is shown on the mobile app, with a breakdown for that particular trip and a cumulative score. This includes detailed charts and metrics for each category. The process is transparent and well-documented, along with the math involved [0]. It even includes a simulator to see how changes to your driving would affect the score. It's honestly pretty impressive and highly polished; even the graphs are interactive. Like any metric, it's not flawless, but it serves its purpose.

Only after driving for an extended period while maintaining a safety score of 99 or 100, you'll eventually have an option to activate the FSD Beta.

The driver monitoring is quite sophisticated now. It's made abundantly clear that after 3 violations (or maybe 5 now), FSD Beta access will be revoked. Even picking up your phone with one hand to use it briefly will be detected by the in-cabin camera, and an alert will appear to pay attention.

As someone who participates in the FSD Beta, the barrier to entry is high. And the people testing it are likely to be the safest and most attentive drivers on the road. I keep both hands on the wheel, and I'm ready to take over at any moment.

Based on my anecdotal observations of how people behave on the road, I'd wager 95% of people would struggle with the safety rating :-). You'll find humorous YouTube videos of people being shocked by how low their score is--only after having watched them drive like an NYC cab driver!

Not to mention the built-in safety features make other cars seem primitive by comparison. For example, just recently, there was a cyclist far ahead who was behaving erratically, driving on and off the median, grass, and road. The car identifies a person on a bicycle (shown on the screen), analyzes the trajectory, and presents a series of audible beeps _well_ in advance to alert the driver. That's just one example of many.

The FSD Beta is updated approximately every two weeks, with extremely detailed release notes with lots of machine learning goodness [1]. Examples:

- Upgraded modeling of lane geometry from dense rasters ("bag of points") to an autoregressive decoder that directly predicts and connects "vector space" lanes point by point using a transformer neural network. This enables us to predict crossing lanes, allows computationally cheaper and less error prone post-processing, and paves the way for predicting many other signals and their relationships jointly and end-to-end.

- Improved the precision of VRU detections by 44.9%, dramatically reducing spurious false positive pedestrians and bicycles (especially around tar seams, skid marks, and rain drops). This was accomplished by increasing the data size of the next-gen autolabeler, training network parameters that were previously frozen, and modifying the network loss functions. We find that this decreases the incidence of VRU-related false slowdowns.

- Reduced the predicted velocity error of very close-by motorcycles, scooters, wheelchairs, and pedestrians by 63.6%. To do this, we introduced a new dataset of simulated adversarial high speed VRU interactions. This update improves autopilot control around fast-moving and cutting-in VRUs.

[0] https://www.tesla.com/support/safety-score

[1] https://www.notateslaapp.com/news/721/fsd-beta-10-11-now-goi...

qubitcoder··on Home Depot Finds DIY Success with Vector Search
The Home Depot mobile app is pretty nice. It's significantly easier and faster to use, especially while in a store. Along with the quick location toggles/searches, it's worth checking out.
qubitcoder··on US Senate votes unanimously to make daylight savings time permanent
Languages aren't logical pre-determined constructions (unless they're intentionally designed, such as Esperanto).

Humans create languages. And they constantly change and evolve, including new words, letters, grammar, etc. Consider Old English versus Modern English [0]. Or even software companies that have become nouns or verbs in common parlance (e.g. "to google").

[0] https://en.wikipedia.org/wiki/Old_English

qubitcoder··on US Senate votes unanimously to make daylight savings time permanent
I think you might have this backwards.
qubitcoder··on US Senate votes unanimously to make daylight savings time permanent
I'm not sure I follow. Bright sunlight strongly triggers my wake response, even if I've only fallen asleep within the last hour or so. And even with blackout curtains or no windows, you'd still be starting your day long after the sun is up.

All I'm saying is that it feels psychologically rewarding (for me anyway!) to wake up and start the day before the sun is blazing. When the time changes in the winter, that perk is gone. Moreover, driving without sunlight in the morning doesn't seem like a big issue; it's presumably preferable to driving at night when ambient light will only decrease.

Excluding shift workers, I don't think I've ever heard someone complain about too much daylight during evening hours--aka the hours during which people are usually living and enjoying life.

qubitcoder··on US Senate votes unanimously to make daylight savings time permanent
Personally, as someone with DSPS (Delayed Sleep Phase Syndrome), I absolutely love waking up and going to work when it's still dark in the morning. It feels so productive and motivating.

On the contrary, when the sun is already blaring, it feels like you're already running late & behind. Not to mention interfering with already precious sleep.

The world is already hyper-optimized for early risers. For once, let those of us who don't naturally fall asleep until well into morning hours enjoy a perk! :-)

qubitcoder··on Ask HN: How I buy a TV that don't show porn ads to kids?
I've had an LG OLED C9 for almost 3 years. I don't believe I've ever seen an ad.

You can go into the Settings, poke around a bit, and turn off all the personalization/ad options. When I turn on the TV, it shows the last used input source. No ads or junk.

At least in my experience, and that of friends, WebOS is minimalist, fast, and easy to use. The settings are easy to adjust, with plenty of advanced options you can drill into--and all presented in an intuitive manner. Not to mention being orders of magnitude superior to the slower-than-molasses Android abomination on my previous Sony X900F.

If you're just using for Netflix, Amazon, etc. (or with an Apple TV--also built in now as an app), I'm not sure where you'd see ads.

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