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Ask HN: What interesting problems are you working on?

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621–630 of 709 posts

Re: Ask HN: What interesting problems are you working on?

#621

I'm growing the freshest lettuce, iron-rich kale, and a lot of other leafy greens! While in college (CS & Math), I got heavily interested in growing food in the most efficient and healthiest way possible. I was a dreamer when I started so I thought more of how to grow 'earthly' produce on Mars, but then I realized that my own planet Earth is so massively underserved. It's basically like this- I mastered growing leafy…

Hey Dave,

Is it possible to setup a 'microfarm', similar to a window fridge appliance, in a part of an apartment room?

I'm ok with some manual work every 2 days, such as filling in a water container.

Besides water & substances, how much electricity would this use to grow a generation of leafy greens, per kg of produce?

Thanks for working on this!

Re: Ask HN: What interesting problems are you working on?

#622
I’ve discovered a new class of surfboard fins, they’re also the first ever designs that can be simply 3D printed, sanded and surfed. This means that a person in a developing world surf town could affordably obtain a 3D printer and begin producing $50-$100 of fins per day; costing 1/10th that price in filament. My site: https://techfins.surf (still a bit to go in completing it)

My Open Collective page (I’m ballin’ on a slim budget here) https://opencollective.com/techfins

You can see more of my fins effort on my instagram page, @stormfins

I recently decided to use the techfins name instead.

I ended up working on this thanks to a passion for surfing, and knowledge that new airfoils could radically improve my surfing ability by augmenting my surfboards’ capabilities. I learned CAD four years ago just to do this - make fins based on new airfoil templates. This ‘new class’ is essentially high lift fins. Compared to the current surfboard fin standard (6mm thick fins), my 16mm thick fin designs provide radically more drive, traction and stability to surfing at the lower speeds. Making normal to pumping surf more accessible and enjoyable to novices and experts.

These fins are not only empowering for surfing ability, they’re also safer because of their thicker, more rounded edges, and when 3D printed the fact they break before your skin does. Also, if these fins could be fitted with an internal floatation during printing, they could be recovered and glued back into place using automotive plastic glue.

These are also literally the first high performance Wavestorm fins to be created as well. Anything else out there is a boring, simple fin design.

Some past feats I can be proud of that you all may appreciate:

• created BeelineReader.com’s first working app, helping them get off the ground. Helps you read much faster using a novel, internationally patented innovation.

• Created a web browser with T9Space.com that empowered 10s of thousands of Nokia phone users around the world to access the desktop only internet back in ‘07-‘10

Earned a bachelor’s in CE at UCSC 20 years ago.

My moniker thirdsurf is about a P2P ‘school of surfing’ project I want to get going next. There needs to be a more dynamic connection between those with the knowledge and those who’d like to learn.

If this fins thing gets off the ground, it’ll open up other possibilities. Nucleos.com is an example of a company that’s been developing a cheap school software server that can operate in developing world conditions. I want to see 3D printing fin labs sprouting that use a computer that can serve out edu apps to anyone nearby who has a wifi device.

I also aim to set up a P2P market for people who could fabricate the digitial fin designs I’ll be making available. This could open up a market of innovation, empowering people to tout novel materials and fabrication methods, helping advance greener, safer and more economical ways to make these fins, and other goods.

Also, in places where it may be difficult to obtain filament, the machines https://preciousplastic.com/ and others are developing could turn plastic refuse in devloping world areas into a precious commodity.

Re: Ask HN: What interesting problems are you working on?

#623
post #500

Earlier quoted context omitted.

I suppose it won't save me, but <3 for working on this. I need work done, but I don't have dental insurance, will have to pay out of pocket, and have yet to overcome the analysis-paralysis problem of finding someone who'll charge a fair price, do good work, and won't add any more holes than I need.

One of the reasons I keep working on this project is that I am in a similar situation. When I started researching this topic, I did a test. I made x-rays, and my friend dentist took dental photographs of me. Then I had sent these over email to 7 independent dentists. Recommendations I got where as diverse as the ones from "How dentists rip us off" article by Readers Digest. I haven't done any of recommendations excep…

What's your timeline like?

Re: Ask HN: What interesting problems are you working on?

#624
post #359

Earlier quoted context omitted.

I think it’s a great idea. I first started learning Dutch with Michel Thomas audio course which is very much about being in a simulated small language class, and you need to say sentences when prompted by the “teacher”. Later in, I learned almost all the Dutch I needed to pass the citizenship language exam just by conversing with friends and family in Dutch, gradually building up fluency. Let me know if you need a be…

That would be fantastic, thanks. I'll jot your e-mail down and will reach out when I'm getting close to something testable.

I'm an English teacher. Sign me up too?

Re: Ask HN: What interesting problems are you working on?

#625

I'm trying to create a program that can procedurally generate regular plane tilings, in a way that allows them to blend into each other over space and/or time. It makes sense in my head, but I think it won't end up working quite as well as I hope.

Check this out https://github.com/mxgmn/WaveFunctionCollapse

Thanks! I've seen WFC before and I think it's brilliant. I'm trying to do something with a little less randomness to it. I want to animate transitions between archimedean tilings (https://en.wikipedia.org/wiki/Euclidean_tilings_by_convex_re...). There may be a connection with WFC that I'm missing. My approach is more, uh, direct, I guess.

Re: Ask HN: What interesting problems are you working on?

#626

Earlier quoted context omitted.

Thought your username looked familiar, I've seen your site on OzBargain many times. I always wondered how/if finding cheap flight deals could be automated, and it's interesting to hear that it's as hard as it seems. Just FYI, your logo and part of the menu disappear off the sides of the site background on my 4K screen.

interesting - thanks! Would you let me know what browser/OS as well, just so I can have a look?

For sure. Win 10 Pro x64, 4K screen at 150%. Just tested on Firefox Developer 73.0b6 (64-bit), Chrome 79.0.3945.130 (64-bit), Edge 44.18362.449.0, IE 11.592.18362, all with the same issue [0][1]

I think it's just that with the background image being 1880×1253, it isn't wide enough with background-size: auto. I just changed it in FF devtools to background-size: contain, and it looks fine.

[0] https://www.dropbox.com/s/f0ewee5b1rc1bnw/beatthatflightLHS....

[1] https://www.dropbox.com/s/pxdvr2o8o96f6x7/beatthatflightRHS....

Re: Ask HN: What interesting problems are you working on?

#627

As somebody with broad interests, I've long been fascinated by what it means to be a "generalist" and understanding when a wide, varied skillset is an advantage over a hyper-narrow one. I've been reading about this for years and recently started sending out short summaries of what I've learned (typically geared at how the lessons can by applied practically). Last week I shared how Nobel laureates are 22 times more li…

Assume you have The Range by David Epstein? Basically book advocates diversity in skills over specialisation, personally I am a big buyer of that thesis, one reason I read HN everyday.

Yes! I'm halfway through and have been stunned at some of the less-known research he cites and some of the popular research he debunks (specifically, the study behind the "10,000 rule").

It's also somewhat of a relief to read.

I think intuitively many people feel that range matters, but fear that we'll sound like we lack a "speciality" or even "hard skills" if we proclaim ourselves generalists or broadly curious.

Re: Ask HN: What interesting problems are you working on?

#628

As somebody with broad interests, I've long been fascinated by what it means to be a "generalist" and understanding when a wide, varied skillset is an advantage over a hyper-narrow one. I've been reading about this for years and recently started sending out short summaries of what I've learned (typically geared at how the lessons can by applied practically). Last week I shared how Nobel laureates are 22 times more li…

Whoa, I just signed up for your newsletter a couple weeks ago. Small world. I'm enjoying it so far, keep it up! I too have really broad interests...I find basically everything interesting, which is both a blessing and a curse, as I'm sure you've experienced. I'd love to talk about this more...do you feel you've come to any kind of answer on how to focus your wide interests?

Excited to have you on the list! Definitely hit reply every once in a while as I'd love to chat more about all of these topics one-on-one.

One theme I'm starting to converge on is the idea of a generalist as an "expert" at a) maintaining a wide range of mental models and skillsets and b) developing a sense of which type of problems to apply each to.

In other words, effective generalists become good at knowing which speciality or approach should be applied to a problem, even if they "only" grasp the basics of any one discipline.

Example:

A software engineer wants to develop deeper friendships. They may think that building an app that reminds them to keep in touch with friends will help.

Of course they think that... software is what they know best.

But a generalist may take a different angle and see that the root cause isn't an automation / information problem, it may be a human psychology issue.

"The real problem is that you don't believe you're worthy of love. If you work on that, you may feel confident enough to want to reach out more."

The next email is going to start outlining the most practical, effective mini-mental models that generalists can use to solve practical problems.

Re: Ask HN: What interesting problems are you working on?

#629

I've been meaning to improve "news" for a number of years now, with limited success so far. The current news industry is broken beyond repair: all you get are bite-sized irrelevant factoids. A good news service would be: - Relevant to you and your interests... - ... but diverse enough to feed your intellectual curiosity - Delivered in a timely fashion: apart from once a year big events, most things can wait for a few…

Great problem. If I had time I would build a news aggregator with an unintuitive voting concept: Downvoting only, sort by -age*downvotes.

The goal is to have a system that avoids the rich-get richer effect, avoids false negatives (good content with bad rating) and in general a better correlation between votes,quality and clicks than upvoting systems.

I wrote a small simulation to test my hypotheses against HN and reddit scoring mechanisms, and it looks very promising.

Unfortunately I don't have more time to work on it...

Re: Ask HN: What interesting problems are you working on?

#630

Earlier quoted context omitted.

That would be fantastic, thanks. I'll jot your e-mail down and will reach out when I'm getting close to something testable.

I'm an English teacher. Sign me up too?

Sure! My email is in my profile, feel free to shoot me a note with your contact details.
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