HNHacker News
TopNewBestAskShowJobs

drewrv

3,467 karma · joined November 6, 2011

submissionscomments
drewrv··on An open call to restore normalcy for U.S. children
> I don’t know how anyone can support restrictions at this point.

Off the top of my head...

- Kids can spread it in their community

- Adults and elderly people work at schools

- Not all kids are fully vaccinated

- Kids are adaptable, it's adults who are throwing temper tantrums about having to wear a mask

- Most of the mental health effects mentioned in the article are consequences of school closures, not caused by wearing a mask and reducing crowding in the cafeteria. In fact masking can make school more normal and routine, by reducing the need for substitute teachers, or skipping PE because the gym teacher is out sick, etc.

drewrv··on More Americans are saying they’re ‘vaxxed and done’
> figure out how to reduce your child's risk of dying in a car crash

Most parents already do some form of this. Car seats, booster seats, researching crash test data....

drewrv··on Ask HN: How do you recruit beta testers for your SaaS?
I think it's builds trust to signal to your users that the product is still young. That sets expectations that there may be bugs but you're looking to actively fix them, and that half baked features will become more stable and usable over time.

The phrase "beta testers" isn't great though. People don't want to pay to test other peoples software. I think "early access" is better phrasing. I'm working on an idea and planning to preview a feature grid with different tiers, then grey it out and have an overlay saying something to the effect of "early access only right now, open your account now and get locked into this lower price." Followed by a list of available features and "coming soon".

drewrv··on Southwest new CEO denies walk-off rumors, defends pilots amid schedule meltdown
“Polls in summer 2020 estimated that between 15 million and 26 million people had participated at some point in the demonstrations in the United States, making the protests the largest in U.S. history.”

https://en.m.wikipedia.org/wiki/George_Floyd_protests

Given the sheer scale of people protesting they were, by all reasonable definitions, mostly peaceful. When news reports prefer to show things like broken windows and trash cans on fire, but it’s impossible to show 15 to 26 million people spread across 50 states, emphasizing that the protests were mostly peaceful and the violent images are the outlier is responsible journalism.

drewrv··on England vaccine passport plans ditched, health secretary says
I take your argument as “covid will be around forever so we should act like it doesn’t exist” which is nonsensical to me. I’m not sure I can come up with a more charitable interpretation: sometimes things change and societies need to adapt.
drewrv··on Why Don’t They Believe Us?
This article feels like it’s saying “Imagine you’re ignorant of how elections work. Imagine you also don’t now much about history, or about statistics. Imagine you’re too lazy to google the word “gender” and read Wikipedia. Now do you understand why someone like this would be skeptical of a new vaccine!”

I understand perfectly well why massive amounts of people are forgoing vaccination. Right wing media and the social media ecosystem have twisted their brains so bad they’d prefer to go to a farm supply store and take horse dewormer.

drewrv··on Gab.com’s Response to Congress
It seems to me like there are more forums for free speech now than ever before. When in our history has it been easier for the average citizen to find a platform to host their views?
drewrv··on Lenovo tablet forced update shows un-dismissable, un-mutable, ad notifications
I switched from a MBP to a Razor Blade 14, with their 4k screen option. I forget what I paid but it was on par with a similarly specced MBP.

The only real compromise that I've noticed is that the battery life isn't as good. But part of the reason for that is that it has an actual graphics card (albeit not a great one). So it's more of a trade-off than a compromise, the ability to do light gaming is worth it for me.

drewrv··on Buoyant wants to solve middle-mile delivery with cargo airships
I wonder how much the airship itself will cost at scale. Since their plan is to be autonomous, and energy costs will be low, it seems the economics of this depend on the cost of the airship and maintenance.

Put differently, if they’re cheap enough you could just buy 100 and ship 67,500 lbs a day.

drewrv··on First image of a black hole: a CNRS researcher had simulated it as early as 1979
Yeah I thought about this and looked into it a little bit. A "point" has zero dimensions so my intuition thought that there's nothing TO spin.

What happens at the singularity in a rotating black hole depends on your quantum theory of gravity. Some theories have the singularity as a "ring" instead of a point. I believe loop quantum gravity has a "planck star" in the center of a black hole.

Macroscopically, rotating black holes can be thought of as rotating the space around the event horizon. So the spacetime curvature doesn't just pull you directly to the center, there's an angular aspect as well.

https://en.wikipedia.org/wiki/Planck_star

https://www.youtube.com/watch?v=UjgGdGzDFiM

drewrv··on Woman sues L.A. after being struck by car on a street where tents block sidewalk
I agree in principle that if there's a safe bed available, setting up a tent in a park should be illegal. But reality is complicated and there are lots of edge cases.

Theft and assaults happen at shelters, so maybe there's a bed available but do people feel safe? If you were assaulted at a shelter would you want to return the next night? Forcing people to chose between two unsafe options (shelter or jail) feels cruel.

Addiction also complicates things. Should a shelter allow substance abuse? If so it can be a really bad place for recovering addicts. If shelters do not allow substance abuse, then addicts have no place to legally exist. If locking them up actually helped their addiction that might be ok, but it does not.

There are other problems with shelters. Many of them have weird hours and capacity limits. Many are gender segregated. What people need is a space where they feel safe, they can store their belongings, they can come and go as needed to get to appointments and services, they can live with a partner or on their own. These are the things that will help people get back on their feet, overcome addiction, etc, and "shelters" are totally inadequate.

drewrv··on Ask HN: How to Do Accent Reduction?
I know of a language learning app that specializes in accent reduction: https://www.bluecanoelearning.com/
drewrv··on Physicists confirm two cases of “elusive” black hole/neutron star mergers
I don’t fully understand it, but I believe the way to think about it is that: we never “see” something fall into a black hole. But the photons from the “last moment we see” get so redshifted they’re essentially invisible. Therefore from a reasonable distance it “looks” like the object disappeared and the event horizon grew in size.

Here’s a video, he talks about the redshift around the 8 minute mark. https://youtu.be/vNaEBbFbvcY

drewrv··on So you want to build a house more efficiently
Brick in Seattle is not great because we get earthquakes and brick tends to crumble.

There are some brick buildings, and there are some things you can do to reinforce them in preparation for an earthquake. But in general, wood is better.

drewrv··on What makes quantum computing so hard to explain?
Do you know a good source for someone to learn about it at a high level, if they took linear algebra in college but haven’t touched it in 10+ years?
drewrv··on Once a bastion of free speech, the ACLU faces an identity crisis
I don’t buy this argument. One of the reasons police are quicker to open fire on people here in the US is because so many people have guns.

Countries with fewer guns have fewer armed police officers and fewer policemen shootings.

drewrv··on Texas lawmakers approve bill banning 'meat' & 'beef' on plant-based food labels
> Meat is not solely the used to describe the output of slaughter.

Reminds me of this bit from an underrated sitcom I binged a while back: https://www.youtube.com/watch?v=lN4V_tgXuNY

I'm surprised the lawmakers didn't try to regulate "tuna steaks" out of existence.

drewrv··on Goodwill doesn't want broken toasters
I’ll add that food banks also prefer money over the can of beans that’s been sitting in your pantry for six months. They can buy in bulk at great rates and they know what the community needs.
drewrv··on Biden eyeing tax rate as high as 43.4% in next economic package
> It's already been mentioned that some of the money has been taxed once already, when the corporation pays taxes on profits before they're paid out as dividends.

I never understood "double taxation" arguments. Currency circulates, of course a given dollar will get taxed more than once as it moves around the economy.

drewrv··on Questions to ask in a job interview that reveal company culture
If you get an offer, it’s reasonable to ask the hiring manager to meet for a coffee and discuss some of this stuff before accepting. They might try to sell you on the role a bit but you can get answers to these questions, and if they refuse to meet you that’s a signal in and of itself.
drewrv··on The Airline Safety Revolution
It's nice to see a news story that says "this thing is going well" for once.
drewrv··on Surface Laptop 4
This doesn’t answer your question, but it appears ROS can work with WSL.

https://jack-kawell.com/2020/06/12/ros-wsl2/

drewrv··on Min wage would be $44 / hour if it had grown at same rate as Wall Street bonuses
Somebody earning pennies more than minimum wage would be excluded from this analysis, despite the fact that they’re earning poverty wages and would benefit from an increase to the minimum wage.

> the Congressional Budget Office released its analysis of the Raise the Wage Act of 2021, reporting that increasing the federal minimum wage to $15 per hour would affect 17 million workers who are currently making below that. Another 10 million additional workers earning slightly above $15 per hour would be affected.

https://www.cnbc.com/2021/02/08/15-minimum-wage-would-benefi...

drewrv··on Amazon's scorched-earth PR strategy
> I'm afraid Warren and Sanders populism is now unopposed in the Democratic party

Both of these senators ran in the presidential primary and not only were they opposed, they were defeated.

drewrv··on Greenwald: The Leading Activists for Online Censorship Are Corporate Journalists
I don’t think CNN is the pinnacle of journalism, I’m saying they meet a minimum bar of standards that Greenwald doesn’t or can’t.

CNN definitely has a bias towards scandal and outrage but so does Greenwald. He has the same incentives as them (clicks) but he does it without fact checkers.

What I recommend to people is a diverse media diet. Different mediums, different incentives, etc. So not Fox News and MSNBC, but newspapers, books about current events, public broadcasting, etc. And best to be skeptical of anyone promising “the truth about X” or “what Y doesn’t want you to know”.

drewrv··on Greenwald: The Leading Activists for Online Censorship Are Corporate Journalists
I know he didn’t work there, you’re missing my point: editorial control is not censorship. It’s not censorship when my PR fails code review, it means it needs more work. Similarly for journalists, editors exist to hold them to high standards and if those standards aren’t met it’s not censorship, it’s just part of the job.

All newsrooms have safeguards in place to ensure what they publish is credible, and policies for handling mistakes and corrections when stuff slips through the cracks.

The fact that Greenwald threw a tantrum when held to standards that most working journalists are (and should be) held to does not make him a brave truth teller. It means his credibility is suspect.

Pretending for a moment that there was a terrible editor who was conspiring to squash a well-sourced story, a competent and ethical journalist could simply bring the story elsewhere to get published or pass along their findings to another journalist at a different publication. What a charlatan and a hack would do is raise a big stink, cry wolf, and direct their audience to a substack where people can pay money to hear more, free from any pesky fact checkers.

drewrv··on Greenwald: The Leading Activists for Online Censorship Are Corporate Journalists
Say what you will about CNN, MSNBC, and even Fox: their news departments meet editorial standards that Greenwald can’t handle. He chose to ragequit and declared “censorship” instead.
drewrv··on Abundant Capital
Carta is building a private exchange, and their CEO alluded to the possibility of using it to raise money in his blog post announcing the trial run.

https://henrysward.medium.com/finally-a-private-stock-exchan...

Once we have a liquid and active market for our shares, (in our case we have enough liquidity to support ~ $100M of volume per quarter), when we want to raise primary capital we simply sell common shares out of treasury.

This is powerful for a couple of reasons. First, we get better price discovery on CartaX than going door-to-door on Sand Hill Road. Second, all shares bought on CartaX are common stock. There is no preferred stock, board seat, or covenants to deal with in a primary.

But perhaps most importantly, CEOs and CFOs don’t have to spend months raising money, doing roadshows, meeting with investors, and negotiating termsheets.

drewrv··on Milestone: Half a million downloads for VideoLAN packages in the .NET ecosystem
A lot of language features have been added over the years so you'll be missing out on some great stuff.

Also some libraries changed around a bit during the transition to .net core, so some the code in your book may not compile.

Finally, if it's a book about web dev (asp.net) or something similar (mobile dev, game dev), that stuff has changed a lot over the past ten years.

You're probably best of ditching the books and hitting up some tutorials or checking with your local library. My public library gives us access to safari books online which has a large selection of technical books.

drewrv··on Permanent suspension of @realDonaldTrump
I like to think about these issues as "website moderation policies" because that's all it boils down to. Almost all sites have moderation and for good reason. Besides all the spam and trolls good moderation helps build a community. That's why we're all here, and also why I'm selective about what subreddits I join.

If a company is so powerful that their moderation policies are effectively censorship, then there is definitely a serious free speech concern. The solution is to break up the monopoly so that no one company is that powerful.

← PreviousPage 6 of 25Next →