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gdudeman

660 karma · joined May 4, 2010

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gdudeman··on Gasoline made of carbon sucked from the air (2018)
Ammonia - NH4 - is often proposed as a solution for shipping. Note there is no carbon in the chemical formula, thus there is no carbon dioxide resulting from burning it.

Hydrogen will be made from renewables by 2030.

gdudeman··on Gasoline made of carbon sucked from the air (2018)
I believe Charm industrial is using the biochar process, but producing oil and pumping it into the ground. Even in fields, it’s a solid idea.

And like you said, it’s recognized as being a very stable store of carbon for a very long time.

The trick is getting feedstock nearby so you aren’t pumping tons of CO2 into the air to acquire, move and process it.

gdudeman··on Combination of Rapamycin and Acarbose significantly Extends Lifespan
I want to add some nuance to this:

Resveratrol probably doesn’t do anything. This same research group actually studied it on mice. If you were gobbling it, you’re neutral. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3598361/

Young blood transfusions may work, but the research is certainly still thin. Interestingly, removing old blood seems to be the actual benefit, not the addition of young. Source: https://www.science.org/content/blog-post/young-blood-and-ol...

Extreme caloric restriction reduces lifespan, but there does seem to be a sweet spot of restriction that lengthens it.

None of these things are proven in humans however and we don’t really know the side effects. Do they give you dementia? Do they make you dumb? Unlikely, but we just don’t know.

gdudeman··on A method to promote sleep in crying infants using the transport response [pdf]
This may have worked for you, but I've seen babies cry after breastfeeding and burping. I've seen parents try to force them to breast feed and they bob on and off because they just aren't hungry.

The breastfeed strategy worked probably less than half the time for my oldest.

I'm glad this works / worked for you. If only it were this simple for the rest of us!

gdudeman··on Twilio cutting 11% – Letter from CEO [pdf]
There are a lot of comments quickly taking issue with and interpreting the phrase “anti-racist” as being actively racist.

If you give Jeff he benefit of the doubt here, you can read this to say they’re going to think about whether layoff choices are made with implicit bias and/or racism and be thoughtful about that.

It’s possible that the non-benefit of the doubt interpretation is valid, but I don’t see evidence of that here.

HN is a place where debate is welcomed, but drive-by comments accusing them of going out of their way to lay off white and Asian employees when there is no indication that’s what they’re doing is not helpful to the discourse.

gdudeman··on Felt
Making maps is something everyone does and existing map software is really targeted to professionals. Even if you figure out how to make a map with the GIS desktop software (QGIS or ESRI), taking the maps you made and putting them online is another huge hurdle that requires a separate skillset.

I think Felt is taking the winning approach - to enlarge the market by making map making possible for everyone and making it be online-first.

I've been playing with https://clockworkmicro.com/ to make layers in my spatial database viewable by others, but it requires some GIS knowledge and familiarity with databases (unlike Felt).

gdudeman··on Modern city dwellers have lost about half their gut microbes
There is a great Radiolab show about both the South and modern research into hookworms.

If you have 2-10 hookworms and eat a modern diet (higher in iron), you're probably going to be fine.

If you have 30-50, you're going to have abdominal discomfort and some side effects.

If you have insane allergies or autoimmune disease, the risk/reward seems pretty incredible.

Worst case scenario if you're an adult with hookworms is you take some antibiotics and they go away.

This https://twitter.com/jimmybernot/status/1354443837897388033 is one person's story about participating in those studies.

gdudeman··on In a small trial, drugs seemed to rejuvenate the body’s ‘epigenetic clock’ (2019)
Before you run out to get some growth hormone, you should be aware that metformin seems to extend health span and life span quite effectively alone.

Even people with diabetes live longer on metformin than a control group that is not on metformin. https://pubmed.ncbi.nlm.nih.gov/25041462/

gdudeman··on In a small trial, drugs seemed to rejuvenate the body’s ‘epigenetic clock’ (2019)
If you have a large dog, you can sign up for a lifespan extension study now with rapamycin. https://dogagingproject.org/
gdudeman··on Ask HN: Why doesn't YouTube have a competitor?
If you’re talking about sites that host videos for creators and stream videos to end users, YouTube has some very strong competitors who have eaten into YouTube’s percentage of online video watched: - Facebook - Twitch - TikTok

While you might not think of them as competitors, they provide a very similar service.

gdudeman··on Importance of muscle mass, strength and cardiorespiratory fitness for longevity
There are a lot of recommendations for Starting Strength here and I think the book is great for describing how to do a certain kind of lift.

I read it and was still lost about frequency, how to minimize injury, etc. It doesn't give you the practical "do this" sort of advice a true beginner needs or at least this true beginner needed.

I really like Julian Shapiro's guide for the first few months of weight lifting: https://www.julian.com/guide/muscle/intro

I'd recommend the trainer part though - I tweaked my shoulder trying to just figure it out on my own.

gdudeman··on Wind and solar are cheaper than thought, admits UK government
There are lots of interesting things like this right now. For instance, there is work on hot water heaters that can store excess energy by heating water hotter when electricity is cheap and then mixing with cold water to maintain a constant temp throughout the day / night.
gdudeman··on Marc Andreessen interview
I've certainly seen less qualified people called Chief of Staff. Andreesen's assistant of 20 years is probably more qualified than 99% of the Chief of Staffs in the Bay Area.
gdudeman··on Three New Longevity Startups
More like their wealth.

If you look at the article I linked to, it shows relatively flat beef consumption until the mid 2000s.

I’m not saying beef will kill you, but picking two or three rich countries that eat a lot of meat — and have a huge amount going for them in other ways — and comparing them to India is not science or a statistically significant thing. It’s like comparing teacher salaries and alcohol prices in the 1970s and saying one causes the other when they’re both the result of inflation.

gdudeman··on Three New Longevity Startups
These are highly confounding statistics. Meat consumption grows with wealth and lifespan also grows with wealth. To say lifespan grows with wealth because of meat consumption doesn’t make sense.

Hong Kong’s beef consumption doubled since 2003. I’d wager your average elderly American ate more meat in their life than your average Hong Kong resident.

Source: https://medium.com/@ecyY/meat-consumption-growth-in-hong-kon...

gdudeman··on Black boys don’t need more discipline, they need mentors (2018)
If you’d like to learn more about the racism black farmers endure today, the 1619 podcast had a good story called the land of our fathers. Farmers live and die by credit and bankers and banks can be racist.

https://www.nytimes.com/2019/10/04/podcasts/1619-slavery-sug...

gdudeman··on Too Much Dark Money in Almonds
This isn’t how it works for the rich.

If you donate appreciated assets, you don’t pay taxes on the appreciation, so in the best case scenario (e.g. you bought bitcoin at a penny) you donate $100, but it is the equivalent of $80 after tax.

Additionally, you get to write that $100 donation off your income. If you’re in the highest tax bracket, that means you’re saving $39 off your tax bill.

You’ve effectively given $100 in exchange for the cost of $41.

gdudeman··on The genetics of university success
I agree on your critique of the growth mindset. It's hard to teach. I meant more that we're looking at small differences in innate ability and deciding that we've accomplished as much as we can.

I strongly disagree with that. We do not have a research-and outcome-backed educational system. Teachers wildly vary in quality and approach and get very little feedback in order to improve.

I firmly believe a person born of average intellect should be able to master calculus. Most don't.

From Patrick Collison's Questions:

> Is Bloom's "Two Sigma" phenomenon real? If so, what do we do about it?

> Educational psychologist Benjamin Bloom found that one-on-one tutoring using mastery learning led to a two sigma(!) improvement in student performance. The results were replicated. He asks in his paper that identified the "2 Sigma Problem": how do we achieve these results in conditions more practical (i.e., more scalable) than one-to-one tutoring?

gdudeman··on The genetics of university success
There is an amazing amount of fixed mindset thinking amongst the armchair geneticists on hacker news.

Two hundred years ago, the median person could not read. They could not do algebra.

There is no doubt that some people are born smarter than others. There is no doubt in my mind that simultaneously we waste much of the potential of many people in our society and that the median human is capable of much more learning and output than they produce today.

gdudeman··on E Pur Si Muove
I have in fact had many rational discussions with people I disagree with in SF. Around guns, libertarianism, and unlimited freedom on the right and huge taxes on the rich, free healthcare for all, and socialism on the left.

This isn't that hard! The trick is you have to start with an open mind and try to understand where they're coming from. That's true in every place in the US - you aren't going to convince people of your "truth" 99.5% of the time, you're only going to understand their truth.

However! Expecting everyone to want an open discussion or even to hear about your pet controversial topic will make your life hard no matter where you go unless people are pretty close to you politically.

gdudeman··on E Pur Si Muove
I'd like to challenge this.

If you go into a startup and say "I'm a communist," many of them are going to be pretty skeptical of your ideas. You will find yourself in a lot of awkward conversations if you make this a thing you want to talk about.

If you pitch a VC and throw in "btw, I'm a communist," or they find your online writings about being a communist, you aren't getting a check.

If you apply for upper management at Google and you say "I want to overthrow capitalism because I'm a communist," you're going to have a really, really hard time.

I don't think it's arguable that communists are actively operating in America and causing capitalists to have longer jail sentences or killing them when they wouldn't kill communists. So, no, I don't think communism is a threat whereas anti-semitism and racism are immediate threats.

I don't think that we need to jail all people who are racist, but I think it's just fine to not talk to them or to yell at them or even to fire if they feel the need to express their beliefs in a way that gets in my business or stops me or my team from doing our work.

gdudeman··on E Pur Si Muove
I think the author explicitly states we need to be okay with name calling later on?

"This is uncomfortable, but it’s possible we have to allow people to say disparaging things about gay people..."

gdudeman··on Why Some U.S. Ex-Spies Don't Buy the Russia Story
This is incorrect. In one case, Trump won the election by very narrowly winning more popular votes in key states. Those votes could have been influenced by the news.

What the DNC leaks show is also the messiness underbelly of virtually any campaign. You can call it collusion, but I'd say it's the DNC doing their job to try to get an electable candidate on the ballot. The RNC did the same thing - they just failed this time.

Had the Trump team's email leaked in the same way, I suspect the election would have gone the other way.

gdudeman··on Ask HN: What tech that's right around the corner are you most excited about?
I think it's a crypto-utopian view that election fraud can be fixed with a better record. Election fraud is a fairly small problem in countries like the US and the problems are around voters not voting in the right place, having a new address, losing their proof of identity, etc.

The security community thinks a paper trail is essential - less computers, not more - not a public database. I'm not an expert, but I tend to trust them.

gdudeman··on Update on Bitcoin Cash
Not to mention that anyone can create a new bitcoin-fork.

Animats-coin could be created and supported by 2 machines. Is Coinbase obligated to support it just because you have a couple graphics cards and forked code?

If so, there are many near-worthless bitcoin variants and forked chains they aren't supporting.

Whenever someone gets rainbows in their eyes about the magic of the blockchain, I can't help but think "you can imagine the perfect, utopian future - the same one we imagined about the internet in 1994 - but none of the unintended side effects."

gdudeman··on Gender Imbalances Are Mostly Not Due to Offensive Attitudes
"Let's assume for the sake of argument that women and men are equally likely to "harass" someone, and let's say that likelihood is 10%."

You've done good math (I think?) on a false premise.

People harass other people when the environment is open to it or encourages it. That seems to happen in a lot of male-dominated environments.

People aren't compelled to harass or not in a pre-programmed way and they don't do it evenly no matter what surrounds them. They respond to incentives and their surroundings.

gdudeman··on Electric Cars Soon Will Cost Less Than Gas Cars, Research Suggests
I plug my car into a normal outlet and drag a cord across the sidewalk (my neighborhood is single family), so it depends. If there is an outlet near where you park your car, you may have everything you need for a charging station.
gdudeman··on Electric Cars Soon Will Cost Less Than Gas Cars, Research Suggests
This will shorten the battery life, however (at least on the Nissan Leaf).
gdudeman··on Mapping 50 Years of Melting Ice in Glacier National Park
The human mind is tuned to story. Stories help us make sense of facts and give them meaning. That's probably different from person to person - possibly you believe you're on the fact end of the spectrum.

This is a small part of the overall climate story, but it's actually what you're arguing for I think - it's a factual account of how glacier ice has changed in the park. The same has happened in the Juneau Icefields, Mount Rainier and elsewhere.

Stories are also a useful way to summarize the facts and can be misused to support things that are not factual - I understand that's what you're saying here.

I'm not aware of the story you allude to around accurate or inaccurate thermometers - the one you believe to be the truth.

gdudeman··on Lilium – Electric vertical take-⁠off and landing jet
Is this dissimilar to a helicopter though?
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