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christiangenco

1,746 karma · joined June 28, 2010

Founder of https://fileinbox.com.

http://gen.co

x.com/cgenco

[ my public key: https://keybase.io/cgenco; my proof: https://keybase.io/cgenco/sigs/LgK8P0SEGcSHPD424yQP4pPhNx-WRxkiO8T7GnWShUU ]

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christiangenco··on Is a Covid Personality Disorder Caused by Viral Damage to the Prefrontal Cortex?
No[1].

1. https://en.wikipedia.org/wiki/Betteridge%27s_law_of_headline...

christiangenco··on Unpredictable abilities emerging from large AI models
Dune is a great example of that! After their AGI goes sideways (in the Butlerian Jihad) human civilization shifts entirely to using human supercomputers (Mentats and the Bene Gesserit) juiced up on mental enhancement drugs (Spice).
christiangenco··on Unpredictable abilities emerging from large AI models
Rude.
christiangenco··on Europe pushing for lunar time zone
Ugh, yes! I keep coming back to .beats as the general solution for all time-related problems.

Here's my small contribution to furthering the effort: https://beats.wiki

christiangenco··on Bigscreen Beyond – Small VR Headset
Bigscreen VR is the most disappointing VR app I've ever used. Please stop wasting time making hardware and make your app better.

I see the potential and I experience the need regularly: I want to watch movies with friends remotely in a cool VR environment that feels like we're watching together in a theater.

In practice my options are to:

- pay to watch "a vast movie selection" of 140 films, the majority of which are anime[1]

- run the buggy (and so aptly named) Bigscreen Beta PC client[2] which will probably crash during weird unlikely edge cases like your screensaver turning on and critically depends on your internet upload speed for a good movie watching experience for everyone. Get ready for frequent "wait is it showing a black screen for you guys?" troubleshooting. It only runs on beefy PCs right now but don't worry: a macOS version is being worked on circa 2019[3].

- send the video file to everyone and get them to download it to a folder of their headset (which involves running Android File Transfer; nontechnical friends will struggle) then start a shared room. Arguably the least painful option with the best overall quality.

When it works though it's so good. Watching a film in Bigscreen feels like watching a film in an actual theater. Their drawing and popcorn throwing features are hilarious and fun. Their spacial audio is a blast. Their selection of virtual theaters is plentiful.

Here's the experience I want to watch a film with friends in Bigscreen:

- log into my Netflix/Hulu/Disney+ account through Bigscreen

- create a new room

- pick a movie

- share an invite code

I understand for that to work Bigscreen would need to make complicated partnerships happen, so in the meanwhile I'd like to be able to:

- drag and drop a video file into bigscreen.com/newroom

- see an invite code I can join from my headset and share with other people

Please someone create this experience. You can use WebXR[4] to do the whole thing with the web stack you already know and you could probably just download a ready-made 3D model of a movie theater[5].

1. https://www.bigscreenvr.com/movies/catalog

2. https://store.steampowered.com/app/457550/Bigscreen_Beta/

3. https://www.reddit.com/r/OculusQuest/comments/c7kx2n/bigscre...

4. https://immersiveweb.dev/

5. https://www.turbosquid.com/Search/3D-Models/free/theater

christiangenco··on Vitamin D supplementation associated with a reduced risk of suicide in veterans
But decreases the risk of dying from skin cancer:

> Melanoma? True, the sun worshippers had a higher incidence of it—but they were eight times less likely to die from it.[1]

1. https://www.outsideonline.com/health/wellness/sunscreen-sun-...

christiangenco··on Vitamin D supplementation associated with a reduced risk of suicide in veterans
I've been using dminder religiously since reading an article about how chronically low everyone's vitamin D is which means sunscreen can be net harmful[1] and getting tested to confirm I was dangerously low.

I'm in Dallas, TX which has a reasonable window of about three hours in the middle of every day where the sun is high enough to shine a substantial amount of vitamin-D-producing UVB rays. Even so it takes conscious effort to schedule an hour outside in minimal clothing and it's hard to do when it's cold and doesn't work if the weather is overcast.

In the winter I'm only able to get vitamin D from sunlight maybe once a week.

Now I take vitamin D supplements[2] and I'm experimenting with UVB bulbs made for lizard terrariums.

1. https://www.outsideonline.com/health/wellness/sunscreen-sun-...

2. Vitamin D supplements are much cheaper if you get a pill maker, empty pill shells, and a bulk bag of vitamin D powder: about 5¢/50k IU pill which is a week's dose.

christiangenco··on Ask HN: What would be your stack if you are building an MVP today?
I had a similar journey but with Rails and ended up in a similar place.

React+Nextjs on Firebase makes the deployment and scaling steps so much easier than on Rails. I'm very conscious of the platform risk of depending so much on Firebase but gosh darn it they've spoiled me.

christiangenco··on Ask HN: Freelancer? Seeking freelancer? (January 2023)
SEEKING WORK | Dallas, TX | Remote

Technologies: React, Next, Firebase, serverless functions, ffmpeg, React Native, Twilio, Stripe, GPT-3

19 years of experience building stuff for the internet. Here are some of them: gen.co/projects

I've been running small solo SaaS businesses since college and would love to be mixing in more freelance work to feel more financially stable in preparation for starting a family.

Schedule a call with me at https://calendly.com/cgenco/firebase-development

I also co-host a weekly podcast at makers.dev

christiangenco··on Blog series on building an air sensor with Arduino
I love it! Great roadmap too. In a previous discussion of DIY indoor air quality sensors[1] MQTT+Zigbee was brought up as a good standard interface.

1. https://news.ycombinator.com/item?id=33773786#33775308

christiangenco··on Hyperview: Native mobile apps, as easy as creating a website
I used to love jasonette! I think the project was abandoned a while ago but in digging into it from this comment it looks like it was forked just for iOS and is now actively maintained at https://jasonelle.com/
christiangenco··on Show HN: Yahtzee and Poker and Cosmic Horror = Pine Tar Poker
Congrats on launching! Your game looks polished, consistently thematic, and I feel intrigued by the "magick" mechanisms hinted on the landing page.

I'm curious what marketing mobile games looks like in 2023. App store optimization? Buying app store ads? Getting people to review your game?

christiangenco··on LosslessCut: lossless video/audio editing
LosslessCut is a lifesaver for cutting segments out of my usually-unedited podcast[1].

The workflow to do a minor edit in a full editor like Final Cut Pro looks roughly like:

- open Final Cut Pro

- create a new proj... oh shoot no, a new library? Yeah that's right.

- click import and track down the videos on my hard drive

- now create a new project and drag the videos into the timeline

- use the blade tool to cut out a segment

- export the video which is... uh... oh yes under the share menu bar and then the format needs to be... hmmm... I think export for YouTube

- wait approximately `videoLength/5` for the video to export

- oh my goodness my hard drive somehow has `videoSize*4` less space

In LosslessCut that workflow looks like:

- open LosslessCut[2]

- drag and drop your videos in

- mark the start and end times of either the segments you want to keep or the ones you want to take out

- hit export and... wow, it's already done? How is that possible?! And it's just in the same format as my source video! Perfect. Oh man and it even saved a little xml file so if I happen to open the same file again I haven't lost my human work of marking the in and out points.

The cuts are usually slightly off from where I'd ideally like them to be, I think because LosslessCut can only cut on i-frames[3], but it's a totally fair tradeoff for my use case.

I liked the minimalist editor interface so much I copied the timeline part of it for a dedicated social media video clipper I'm working on[4].

If you'd like to try it out I strongly suggest installing it from GitHub and donating the amount you would've spent in the macOS app store. The macOS app store version has fewer disk permissions and adds an extra step asking for access to each folder you want to edit in.

1. makers.dev

2. frustratingly, right clicking a video and selecting "open in LosslessCut" doesn't work

3. i-frames in most video codecs are "key frames" that repaint the entire frame. Most frames are p-frames or "predicted frames" which just store a delta from the last frame.

4. thevideoclipper.com

christiangenco··on Stable Diffusion with Core ML on Apple Silicon
Oh gosh that's an intimidating installation process. I'll be much more interested when I can just `brew install` a binary.
christiangenco··on BlockFi files for bankruptcy as FTX fallout spreads
Blockfi was promising ~2-4% annual returns for storing your crypto with them—it wasn't an exchange to buy and sell.
christiangenco··on A friendly introduction to the Friendship Paradox (2021)
Oh—I think this is just another Pareto distribution: a small minority of people have the majority of friends (probably something like the top 20% of people have 80% of the friends).

You're probably friends with several people in that top 20% because they know a lot of people. The average number of friends your friends have including the outliers is going to be higher than the number of friends you have.

christiangenco··on Ask HN: Indoor air quality sensors and other IoT that's local-first and not DIY?
When you've got one I'd love to link to it from gen.co/air!
christiangenco··on BlockFi files for bankruptcy as FTX fallout spreads
OP here!

Thanks for the affirmation. My wife and I are 31 so a 10% drop is definitely something we can recover from. We've already lived through this high-risk crypto part of our portfolio falling to half it's value over the last 19 months but the other half completely vanishing overnight has hit me psychologically harder.

Instead of the narrative of "sure the crypto dropped in value but it's done that before and gone back up and it's reasonable to think it could go back up again," "now it's on sale," and "time in the market beats timing the market," the narrative is just "it's completely gone because you got defrauded. Here's a list of the specific people responsible. You shoulda been more diligent in evaluating the risk of giving them your money ya freakin' idiot."

christiangenco··on BlockFi files for bankruptcy as FTX fallout spreads
This is helpful—thank you.

It sounds like as long as there's enough money to pay the admin, the government, secured creditors, and unsecured creditors, anything left over would get split amongst individual investors like me. Is that right?

christiangenco··on BlockFi files for bankruptcy as FTX fallout spreads
For sure. "Not your keys not your coins" and all that.

Here's my rationale: https://news.ycombinator.com/item?id=33779052

christiangenco··on BlockFi files for bankruptcy as FTX fallout spreads
> can you speak to some of your motivations for putting your life savings into these kinds of vehicles?

For sure. My rationale was that keeping crypto in cold storage was effectively currency speculation and didn't really do anything to add value to the world. By instead keeping it in an interest-earning account it could be earning interest independent of the exchange rate with USD and providing some value to the world in the form of liquidity and loans.

It's the same rationale I use to justify keeping money in VTSAX instead of under my mattress.

christiangenco··on BlockFi files for bankruptcy as FTX fallout spreads
Are Voyager's individual creditors getting 60% of their money back or does bankruptcy only pay out to the largest creditors?
christiangenco··on BlockFi files for bankruptcy as FTX fallout spreads
As long as Vanguard doesn't file for bankruptcy!
christiangenco··on BlockFi files for bankruptcy as FTX fallout spreads
OP here! #1 was my motivation, though at the moment I'm definitely feeling like #4 played a role.

My rationale was that crypto just sitting in cold storage could only gain value if the underlying asset appreciated which is effectively currency speculation. By storing it in a crypto "bank" my money could be working to generate actual value via. liquidity and loans akin to a real bank.

If the money was earning a modest amount of interest it didn't feel like as wild of a risk. Even if the exchange rate to USD is unstable I can still see the amount of crypto going up each month.

christiangenco··on BlockFi files for bankruptcy as FTX fallout spreads
My wife and I had about 10% of our life savings in BlockFi. This is a pretty big blow for us, especially while gearing up to start a family. It's easily in the top 5 worst things to happen to me in my life.

Is there any hope of individual creditors getting any of their money back? I'm unfamiliar with how bankruptcy works.

christiangenco··on Ask HN: Indoor air quality sensors and other IoT that's local-first and not DIY?
Link?
christiangenco··on Guide to FFmpeg
Perhaps you'd like a word count instead?

I believe the way all of these reading time estimates are calculated is a simple `wordCount / averageWordsPerMinute`.

christiangenco··on Ask HN: Indoor air quality sensors and other IoT that's local-first and not DIY?
Were you able to get accurate CO2 readings from the AliExpress Zigbee sensors? I got two of them and the CO2 values from each were wildly wrong. I'm curious if I'm missing a calibration step.
christiangenco··on Ask HN: Indoor air quality sensors and other IoT that's local-first and not DIY?
I think it's difficult to make an electronic sensing device that logs data locally but isn't a little DIY. There's not a great standard for passing around data on a local network. Perhaps the best way to do this from a consumer device would be to log to a USB stick.

You asked for something that's not DIY at the hardware level, though, so I think something like the AirGradient Pre-Soldered kit would be perfect for you[1].

You'll get an Arduino connected to top-of-the-line sensors that can be flashed with your SSID to connect to your local WiFi network. Once connected, the device exposes an HTTP endpoint you can GET for the status of each sensor[2].

I've been thinking a lot about indoor air quality[3] so if this setup works for you I'd love to know!

1. https://www.airgradient.com/open-airgradient/shop/#!/DIY-Pro...

2. https://youtu.be/Cmr5VNALRAg?t=444

3. https://gen.co/air

christiangenco··on Open Library
I was hoping this was the reincarnation of zlib.
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