HNHacker News
TopNewBestAskShowJobs

danboarder

14,379 karma · joined November 24, 2010

@danboarder on Twitter, bootstrapping @SWVFTar, interested in HCI/UX, art, compsci, open web, webVR, robotics, entrepreneurship, MBA, econ & microfinance.
submissionscomments
danboarder··on BibleGPT – Talk to the Bible: Describe your situation or ask your question.
I tried a few scenarios asking for advice and the responses were are reasonable and surprisingly coherent. I imagine it could get theologically weird but I've not seen it yet. I'm guessing the ideas are based on the consensus of biblical advice ideas out on the web.
danboarder··on Feathered robotic wing paves way for flapping drones
Thanks, I missed that, it's too late now to delete it. The 'past' link didn't show anything at the time I posted.
danboarder··on Twitter Developing ‘Coins’ Feature with Stripe Payments
I think this could usher in a new era of clever tweets. Like prompt crafting for AI output, this will be tweet-crafting for coin rewards. What could possibly go wrong?
danboarder··on ChatGPT: How many letters has the string “djsjcnnrjfkalcr”?
The follow up "But how many unique alphabet characters are in that string?" did a decent job though:

> There are 10 unique alphabet letters in the string "djsjcnnrjfkalcr". They are "d", "j", "s", "c", "n", "r", "f", "k", "a", and "l".

danboarder··on California drought: Why doesn’t California build big reservoirs any more? (2014)
Thanks! Maybe I'm not looking in the right places but it seems like big projects to solve buffering of water availability between seasons for the growing needs of California has not been discussed enough. I do see more articles about desalination, but really we already have massive amounts of excess water running off into the ocean during winters that could be captured to serve needs in the summer months. I am wondering if these new efforts will get approved or stuck in "red tape" for years. From the original article, it looks like the last serious effort to build a big reservoir was in the 70s.
danboarder··on Using GPT3 to Interpret Dreams
I like it. I am guessing it could find interesting connections in much longer dream descriptions. What is the limit on input length?
danboarder··on Using GPT3 to Interpret Dreams
It works but my example seems to generate somewhat obvious deductions. (Rather subjective to judge this, I know). Still very impressive! Here it is:

Dream:

I was dreaming of being in an old rich friends' mansion in the mountains, visiting someone I've not seen in years. The dream went on and on, I recall meeting his son and thinking it was his other son named Nate, but Nate never showed up.

Response:

"Your dream is trying to tell you something about your relationship with your old friend and his family.

It seems that you are feeling a sense of nostalgia for the past, as your old friend is not as close to you as he used to be. The fact that his son was in the dream, and that you thought it was another son named Nate, could be a sign that you are missing the connection you once had with the family. The absence of Nate could be a sign that you are feeling a sense of emptiness or loss in your relationship with your old friend. This dream could also be a sign of longing for a time when things were simpler and there was a closer bond between you and your old friend."

danboarder··on VR robots are building railways in Japan
Here is a video showing the UX of a similar VR robot control system from the recent XPRIZE competition. It's using much more than just VR to control and get feedback from the system.

ANA Avatar XPRIZE Finals - Winning team NimbRo Day 2 Test Run https://youtu.be/8AwgGSpcAe8

danboarder··on It’s time to talk about killer robots
Yes, I remember when that happened but didn't hear that detail in the news reports that I recall. Later in the article it sounds like this type of use may be what is in mind at SFPD:

“Robots will only be used as a deadly force option when risk of loss of life to members of the public or officers is imminent and outweighs any other force option available to SFPD.”

and

"The renewed conversation around killer robots in California comes, in part, due to Assembly Bill 481. Signed into law by Gov. Gavin Newsom in September of last year, the law is designed to make police action more transparent. That includes an inventory of military equipment utilized by law enforcement.

The 17 robots included in the San Francisco document are part of a longer list that also includes the Lenco BearCat armored vehicle, flash-bangs and 15 sub machine guns."

danboarder··on Smartphones Are Like Cars. So Why Don’t We Maintain Them?
I agree. I had a fast and functional LG G8 ThinQ running Android 11 that was limited to 4G, and T-Mobile shut down support for it, saying I had to upgrade to a 5G phone. I've moved to a Pixel 6 Pro which is fine but the G8 was also fine (and a bit slimmer and nicer form factor, I miss it!).
danboarder··on CPSC calls for full recall of all Onewheel self-balancing electric skateboards
The learning curve/transition from Onewheel to EUC for me was about a week to get up to speed, I watched a few videos and practiced along a building wall, as well as in a parking lot for about two hour sessions a few times for a couple days before I actually commuted on it on the streets.

For the commuting I do, an EUC has been great - I ride an older Begode Tesla V2 (current version is T4) it has been perfect for riding in traffic with the quick acceleration, higher top speed, and great in bike lanes too. Also for longer rides I prefer riding facing forward on an EUC (like skis), vs the snowboard style stance of my onewheel.

Begode Tesla T4 (newest version of the size wheel I ride, now comes with suspension) https://eevees.com/products/begode-tesla-t4

Some EUC riding tips: https://youtu.be/vR-OYR5ziSQ

danboarder··on CPSC calls for full recall of all Onewheel self-balancing electric skateboards
I own and ride a Onewheel Pint (17mph max) and found it limiting, so moved up to an EUC (electric unicycle) that goes 30mph. I always wear a helmet and come from an extensive background riding BMX on ramps and jumps, skateboarding, snowboarding, and mountain biking.

I agree with some other comments here that there is a learning curve and these are relatively dangerous for new riders, just like a skateboard is dangerous. But I do not think these are inherently more dangerous than a normal skateboard or bike. It's just that the self balancing and electronic assistance can give an unearned sense of confidence where the rider is less cautious than they should be.

danboarder··on NASA Ground Systems – All elements polled are GO to proceed with terminal count
T-2 minutes and counting as of now! Fantastic to see this project launching and around the moon!
danboarder··on Artemis Flight Test Map
T - 7 minutes and counting as of now! Fantastic to see this project moving forward and around the moon.
danboarder··on Hydrogen-producing rooftop solar panels nearing commercialization
I also think these solar-hydrogen systems will benefit from scale as the marginal cost of production drops. Examples like the cost of producing microwave ovens, for example, have dropped from thousands to less than one hundred dollars with economies of scale. As a manufacturing sector of competing parts suppliers emerges, we will see price come down to benefit home owners.
danboarder··on Sensors Under Antarctic Ice Located a Source of Ghost Particles from Space
Yep, sensational title in the original article. :/ Still a fascinating development.
danboarder··on Voting-machine source code: a ray of light, not yet full sunshine (2019)
From the 2019 article: "... A unique Wisconsin law requires voting machine companies to place a copy of the actual vote-tabulating software in escrow after every election. Separate from the process of approving voting machines for sale, this requirement was originally intended to protect local governments’ voting-equipment investment. In case a company went out of business, the State would have a working copy of the most recently updated software as backup to keep the machines counting.

The law also requires the State to allow candidates to inspect the escrowed software if the candidates agree “to exercise the highest degree of reasonable care to maintain the confidentiality of all proprietary information.” The software in Wisconsin voting machines is the same as that used in other states, and any inspection could have national implications."

danboarder··on Body Doubling
This idea of body doubling is the same idea that makes a coffee shop or co-working space productive, in my experience.
danboarder··on Why Businesses Fail: Underadoption of Improved Practices by Micro-Enterprises
Key take away is they found using a Reminder system to implement marketing and bookkeeping led to improved outcomes: "...Compared to traditional business training, reminders and micro-incentives significantly increase adoption of marketing (13.2 p.p.) and record keeping (19.2 p.p.), with positive effects on firm survival and investment over four months. Our findings, together with additional survey evidence, suggest that behavioral biases inhibit the adoption of improved practices, and are consistent with inattention as a key driver of under-adoption"
danboarder··on BYU professors create reactor designed to safely produce nuclear energy
From the article, regarding valuable waste byproducts:

...the molten salt nuclear reactor design not only has the potential to eliminate dangerous nuclear waste but turn its byproducts into valuable commodities that can be harvested from the salt and sold.

Molybdenum-99, for example, is an extremely expensive element — $30 million per gram — that can only be bought from the Netherlands and is used in approximately 20 million medical imaging procedures and scans each year. It can be extracted with Memmott's design.

"We can now go to that salt and apply specific electrochemistry to pull out pieces one at a time, or groups at a time. So this nuclear waste — which is really just a mix of uranium and all these different components — we can now pull those out and separate and sell them," Memmott said. "Not only do we have a reactor that's really resistant to accidents, but now we can actually separate out those components and sell them and make a profit from the other pieces and then we're left, potentially, with no nuclear waste."

danboarder··on Rejoice in the End of Daylight Saving Time
I agree, and I don't really see a benefit of one over the other. It's just a number and society will adapt either way.
danboarder··on Rejoice in the End of Daylight Saving Time
From the article: "... many Americans cheered when the Senate unanimously passed a proposal earlier this year to move the entire U.S. to permanent daylight saving time."

As I recall this didn't pass yet in the House and is deadlocked. And think of all the firmware and car clocks etc that will need to be updated...

danboarder··on Beaming solar energy from space
24-hour or near 24-hour power delivery would be a big advantage to these space-based solar systems, compared to only mid-day daylight for terrestrial solar.
danboarder··on Moonwalkers Dramatically Increase Your Walking Speed
Yep, "early adopter pricing"... except it will probably go down in price with mass production. It does look cool though!
danboarder··on Ask HN: What's the next evolution of the GUI OS?
I like this idea, but as a designer I foresee challenges in optimizing what is visible as you add new "functions" when needed. for example, editing a doc, then editing an image to add to the doc. Traditionally each function would live in an app with gui optimized to that function (Word vs Photoshop). Getting these functions to coexist when both are needed would get difficult to display, as image editing has a screen full of tools usually. Not saying it cant be done! I recall Microsoft had a similar idea with OLE (object linking and embedding), where the menus and tools would change depending on what the user clicks on within what is currently displayed. (See https://en.m.wikipedia.org/wiki/Object_Linking_and_Embedding )
danboarder··on CLIP Interrogator: reverse prompt lookup from image
Super cool! Thanks for sharing. So this is a couple gigs all installed? I plan to try it soon!
danboarder··on A Practical Zeer Pot (Non-Electrical Refrigerator)
"...the interior of a zeer pot can chill down to around 40˚F.

Think of it as an open-cycle refrigerator."

Now I want to build and test one!

danboarder··on Create an Inexpensive Flying Wing / Drone (2019)
This uses the same control surfaces as a v-tail RC airplane ;-) . I built one like this, fairly simple controls using an aileron mix (as elevons) to combine the traditional aileron, elevator, and rudder controls. Note that you can find a lot of RC projects like this online under keywords like "RC flying wing plans".
danboarder··on The fastest electric unicycle in the world can surpass 87mph
I ride an EUC that has a top speed of around 30mph, it's a couple years old (a Tesla V2) and the current crop (prior to the model in the article) are all capable of 45mph or so. I feel safe on mine and ride in urban traffic, and everyone I know that rides is very safety conscious. To see some examples and see what's up with Electric Unicycles on YouTube check out Chooch Tech, Wrong Way Zen Lee, etc.

https://youtube.com/c/choochtech

https://youtube.com/c/WrongWayYouTube

https://youtube.com/c/ZenLee

https://youtube.com/c/UStride

https://youtube.com/c/ElectricUnicycles

danboarder··on Researchers caught a pro-US campaign spreading propaganda on social media
Not surprising but this bit was interesting:

"... the accounts were meant to appear like real people and used AI-generated profile pictures".

It sounds like using AI for covert influence operations is the norm now.

← PreviousPage 3 of 17Next →