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zjaffee

1,272 karma · joined October 7, 2015

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zjaffee··on Making steel without emitting CO2
Not inherently, nothing is cheaper than hydropower.
zjaffee··on New IBM LinuxONE 4 Express – Rack-mounted pre-configured Linux mainframe
It's essentially a very large single clocked machine.
zjaffee··on IBM to increase cloud costs in 2024
They will be, their mainframe business is still pretty central to all things banking related. And I'm pretty airlines use them for critical services as well.
zjaffee··on How Query Engines Work
The power of spark is truthfully that it's really good at running sort + aggregate type queries on columnar stored data. Once you start needing to do complicated joins it becomes more about how you structure everything.
zjaffee··on Apple Vision Pro: Apple’s first spatial computer
Strongly disagree that this will be as revolutionary as the iphone. The iphone, and smart phones as a platform were revolutionary largely because of how portable they are.

This is much more comparable to a laptop than a phone, and it doesn't introduce new communications technology like the iphone did with there now being near universal real time access to people's cameras and gps location.

This feels like what the apple watch was to the iphone but instead to the MacBook pro.

zjaffee··on Hyundai promises to keep buttons in cars
Guess what, most if not all cars today have what's called an ECM which is essentially a computer that controls your engine among other things. It's certainly a very easy task to flash that ECM as long as your inside that car and can plug in common off the shelf devices and have your car very quickly be unable to start.

Unless you're buying a car that's a decade old you cannot find what you want.

zjaffee··on Java 20 / JDK 20: General Availability
This is by far the biggest improvement to java in the last few years and plays a big role as to why a lot of different types of backend tools still are written in JVM based languages rather than switching it up. This said, hotspot still has some issues with taking full control of SIMD optimizations.
zjaffee··on Java 20 / JDK 20: General Availability
I really hope to see the SIMD vector related improvements come through, I know there are some independent JDK code bases that have more evolved SIMD support, but for a lot of big data processing tools, switching away from jdk based languages appears to be the way SIMD related performance improvements have been realized because of this missing crucial feature set. JDK 11 was when this stuff was first in development, and it's truthfully insane that it hasn't fully been released yet.
zjaffee··on Boston Dynamics’ bipedal robot Atlas can now grab and toss
I can't speak for right now, as I last worked on this stuff 8 or so years ago, but I briefly contributed to a DARPA robotics challenge team and simply working in ROS as a whole is an immensely difficult process to really get anything to happen with atlas robots. It's not just something a small number of engineers can quickly ramp up on and be immensely productive immediately, you'd need a pretty big team working on stuff over a period of a couple of years to really take things to the next level.
zjaffee··on Ask HN: What sub $200 product improved your 2022
I think Salmon comes out just as good if not better in the air fryer than by cooking it in a pan, although you need to cut the filets to a very specific size.
zjaffee··on Ask HN: What sub $200 product improved your 2022
Air fryers definitely are very different than ovens or pan frying, it's hard to explain, but it's definitely more comparable to frying in that it crisps up food by removing the water from the outside of stuff quickly.

By this logic it's particularly good at cooking food that otherwise would be better fried, but outside of that it does vegetables like brussel sprouts or small filets of fish particularly well leaving the inside soft and the outside cooked.

zjaffee··on What it's like to live in Monaco
The Grimaldi family has kept their wealth for 800+ years, longer if you count their time in Genoa prior to the existence of Monaco.

European old money held through long standing urban land deads is incomparable to wealth made from industrialization.

zjaffee··on What it's like to live in Monaco
There are some very expensive houses near whistler.
zjaffee··on Stripe laying off around 14% of workforce
They're only paying this much severance because 90 percent of it is legally obligated by the state of California, where the vast majority of their employees work.

60 work days must be paid out, which is 12 weeks of work. So essentially they're giving people only an extra 2 weeks of severance to sign away their right to a wrongful termination lawsuit.

zjaffee··on Adobe to acquire Figma for $20B
Adobe shouldn't be compared to Microsoft or Google, or hell even Salesforce, which are really good at integrating new companies into their existing suite of tools.

Adobe is comparable to Oracle or IBM, where acquisitions mean the death of product innovation as Adobe has a hard time attracting and retaining engineers to the same degree as the above companies.

zjaffee··on TikTok and the Fall of the Social-Media Giants
I have to disagree with that, snapchat was just as innovative if not more so in the early days of tiktok and musically in the space around camera filters and editing.

There are two big things that make tiktok unique. The for you page, and shared sounds that are able to go very viral rapidly. No other platform has been able to circulate viral videos as quickly as tiktok has proven to be able to, and the for you page, rather than encouraging people to actually follow individual accounts, means that people are actually seeing the videos that keep them on the app the longest (and in turn off other apps), rather than having to curate their own feeds.

zjaffee··on Manhattan rents cross $5k threshold for first time
That's not true, there's demand to live in a specific part of NYC. I really cannot stand that urbanists say this sort of thing. Demand isn't just for walkablity, it's for the complete new urbanist neighborhood that was first formalized by the likes of Jane Jacobs and friends. It's about the unique one of a kind shops, access to really unique amenities that only exist in the city and so on.

There are plenty of walkable parts of NYC like the South Bronx that have far lower demand to live there than the suburbs in nearby NJ or hell the not so walkable parts of NYC like Staten island, south Bronx or the outer parts of Queens.

What people want is access to amenities in under 10 minutes of travel time, and under 20 minutes of travel to special events they don't go to regularly, as well as a short job commute. This can easily be solved by getting rid of euclidean zoning in suburbs and building out all American suburbs in the style of cities like Portland originally had been.

zjaffee··on Manhattan rents cross $5k threshold for first time
I grew up in NYC and I think it has a lot of problems that have prevented me from moving back there since college, this said...

NYC has the largest train system in the entire world, especially when you combine the various nearby train systems that aren't a part of the main subway like LIRR, NJ transit, path and Metro north (in China which technically is longer they count long distance commuter rail). The subway alone has more stops than any train system in the world.

zjaffee··on Manhattan rents cross $5k threshold for first time
It's a weird metric to say that late night nightlife is critical for being a global city, instead of say, huge percentages of the population coming from foreign countries. Airport access for direct flights, ect.

Miami also meets every single one of these metrics and has later night life than NYC. New Orleans has 24 hr night life. Vegas too.

Los Angeles has a higher foreign born population than NYC.

zjaffee··on Manhattan rents cross $5k threshold for first time
If I could have a better apartment there I would absolutely consider moving there. The issue is that I'd have to live somewhere that would be considerably worse, and me and my partner make many times more than my parents did when they bought their place when adjusted for inflation.
zjaffee··on Manhattan rents cross $5k threshold for first time
I grew up in NYC and just completely disagree with your analysis here. There are a lot of hidden costs to live in NYC such as some of the highest income and sales taxes in the country, apartments where even if you own if a problem is found the forced maintenace costs can go up thousands a month and you get evicted for not being able to pay. Health driven by sin taxes on soda and tobacco, and much more along those lines than just people walking places.

It is true that older people in NYC are seemingly healthy, but they're definitely a very specific type of person.

zjaffee··on Manhattan rents cross $5k threshold for first time
Building single family homes is much cheaper in the US because of prefabrication. It's something like 3x less per square foot than a 5/1.
zjaffee··on Manhattan rents cross $5k threshold for first time
A huge percentage of the people living in NYC live in income restricted housing, it's in the millions of people.
zjaffee··on Manhattan rents cross $5k threshold for first time
I grew up in NYC and currently live in Seattle. The appeal of Seattle over NYC is the outdoors, substantially cheaper housing (you can get a 4br detatched house in seattle that's a 20 minute bus ride to downtown for less than this median apartment price), and better weather but yeah the food doesn't really compare.

This said, I think LA wins over NYC in the food department outside of the very high end michilin type stuff and certain specific kinds of ethnic food like italian.

zjaffee··on Manhattan rents cross $5k threshold for first time
As someone who grew up in NYC, the only lasting appeal to me is family and specific ethnic culture that is much less in every city in the US that isn't NYC.

The apartment I grew up in, in lower manhattan, today would cost more than 20-30 times what my parents paid for it in the 90s, and it wasn't a nice apartment. There was no laundry in the unit, it faced a dark courtyard, the tempurature of the apartment was never that comfortable, had yearly huge bug infestations, but it was in a great location and was about 5 rooms more or less.

I think people just romanticize a life different than the one they grew up with. I certainly miss some aspects of the city culturally, but life on the west coast, I've had considerably better living arrangements ever since I've graduated college than the one I grew up in, and my parents were both professionals with graduate degrees, it's even worse for a lot of other people.

zjaffee··on Manhattan rents cross $5k threshold for first time
NYC has the second most number of people with software development jobs in the US outside of the bay area although the number is about the same as Seattle which is a much smaller region than NYC, and within NYC the majority of developers work at banks in back office roles.

Boston is definitely bigger for every other type of engineering though than NYC. Most non programming engineering jobs in NYC would either be for a niche startup or would have something to do with real estate.

zjaffee··on Private equity may be heading for a fall
There's another type of PE out there beyond what you've described which is, the owner of a moderately sized privately owned firm (doing somewhere between 10-100 mil revenue a year) wants to retire and sell it off, and PE firms are the only ones who can afford to buy it for the 100mil+ price tag it warrants.
zjaffee··on Coinbase lays off around 1,100 employees
The state of California requires that Employees are paid for 60 work days (8 weeks) if there is a layoff at this scale. I assume that's where the majority of these employees are located. They're offering an extra month/month and a half likely on the condition they sign some sort of NDA/Right to sue the company for wrongful termination.
zjaffee··on The case for expanding rather than eliminating gifted education programs (2021)
Gifted programs, depending on where in the country they are located, are deeply related to equity. Things have gotten better over the past decade even without their total elimination, but for the majority of people who are of age to be posting here, if they were in a gifted program, it likely is because they had parents who helped them study for the tests to get in by spending money. Once in said program, fundraising through the PTA is easier done because the average student is better off financially than at the nearby public school.

When I was growing up in NYC I was in a gifted program, and the average family was donating several thousand dollars a year per child. There were benefits such that if one child was in the program, other siblings automatically got in. This allowed us to have privately funded music program alongside privately funded teaching assistants in every classroom.

zjaffee··on The end of big data
I don't think Delta is meant to compete with Big Query, although it's been a long time since I've used Big Query, I recall upserts not being something you were able to do within BQ and that's essentially the main selling point of delta.
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