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jchallis

2,003 karma · joined January 26, 2018

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jchallis··on Why Dad’s Side of the Family Tends to Miss Out
A good rule of thumb : a son is a son until he gets a wife, but a daughter is a daughter for all her life. This article is a corollary.
jchallis··on Morris Tanenbaum, inventor of the silicon transistor, has died
It's incredibly humbling to think that his #2 and #3 life achievements were building practical high field superconducting magnets (making MRI machines possible a decade later) and being CEO of AT&T.
jchallis··on Experiments with plane-filling curves and Fourier transform
Should generate the same figures in the space domain up to constant factors of 2 pi.
jchallis··on Mayan ball game scoreboard thought to be over 1k years old found in Mexico
Both Maya and the Three and Elena of Avalor had long subplots on Aztec, Maya and Inca characters (human and god).
jchallis··on Ask HN: AWS account suspended, able to access via keys with no console signin
By any chance is your root email address similar to the one you use for your regular Amazon life (kindle / shopping / prime) etc? You should be able to log in using that root account using your usual Amazon email and then proceed to reach out to support.

As root you could also assign the IAM roles to individual users for specific buckets.

jchallis··on Ask HN: What are the best books on the economic history of Japan?
Shigeru Mizuki’s masterful Showa series covers the essential period from the Great Kanto Earthquake in 1923 to the top of the economic bubble in 1989. While not the full story, it’s an excellent and approachable beginning.
jchallis··on Ask HN: First-time dad-to-be. What do you wish you'd known back then?
Some things I’d do again:

The amount of work in your life has now more than effectively doubled- find ways to remove load as quickly as possible . There are laundry, cleaning , food services etc and you should use them to the point of feeling guilty. My wife’s work gave her $4000 in meal kits for our daughters first year driven by her very hard-nosed boss (and former working mom) - we can all emulate her wise example.

Don’t be bullied by parents and family on kids. As others have said their advice is pretty limited to their experience and after a few days may be / may not be helpful. For me the biggest help of grandparents was in keeping the older kids occupied when new arrivals came.

Be careful around water. Accidental drownings are super easy with this set.

Some things I’d do differently :

Get work squared away so you can support mom. If she’s breastfeeding there’s a lot of load she’s going to bear and having work stuff interfere will make you tired and ineffective.

Sleep more. I’ve never been so tired as my first who refused to sleep consistently for three months.

Some super biased thoughts on stuff:

I get every new parent in my life a set of Aden and Anais Muslim swaddle blankets - family, friends , coworkers. Good swaddles make your life so much easier.

Start a college savings fund and tell everyone you’d prefer they contribute to that vs plastic junk. You might get a few takers on something with enduring value.

You are about to get a tsunami of useless crap from lots of well(?)-meaning people in your life. Keep a pretty clear shot for the useless things to go to donate or other parents. 80% of what you receive rounds to useless.

jchallis··on Technology shock, fewer shotgun marriages, and the rise in unwed births (1996)
For context on coauthors , Janet Yellen is the former Fed chair. George Akerlof is a Nobel Prize winning economist and Yellen’s husband. They have one son, who is also an economist.
jchallis··on Ask HN: Teach a 5-year-old math and science over the summer?
The Khan Academy Kids app is really well balanced - a logic exercise followed by a book about dump trucks, a counting game followed by a singalong. It worked for my 4 year old.

If you see some particular math/ science engagement I’ve found Magic School Bus (books / 90s show/ recent reboot )provides an excellent framing.

The Singapore Math Series helped my daughter rocket a few years ahead of her classmates (your mileage may vary here).

jchallis··on Elegant six-page proof reveals the emergence of random structure
Jinyoung Park's Path to Math video on IAS is a really wonderful 3 minute story of how she came to study threshold behavior in random discrete structures, just like this work. Highly recommended. https://www.ias.edu/ideas/paths-math-jinyoung-park
jchallis··on Ask HN: How do you deal with life altering decisions?
I use a regret minimization framework: which choice will I regret most if I don't do it? Some choices I've made are definitely life altering: getting married in my early 20s, moving far away from family. Some choices that seemed life altering at the time didn't turn out to be so : going to school at X, starting a company, etc.

If you are concerned a lot about the road not traveled, ask yourself what you will do if Plan X does not work out. Having a good backup plan can make life altering decisions a little less scary : relationships don't work out, your startup flames out, the things you actually want at 30 aren't what you thought you would want at 30.

jchallis··on Ask HN: How to get bilingual in a country where the language is not used?
The only proven way is to speak regularly with native speakers. Standard approach is find a native speaker tutoring application like Preply. Pro approach is to get an English speaking significant other and kick into high gear.

My 79 year old mother taught English as a Second Language for 20 years in Kentucky and is pretty bored. She would be happy to help you level up .

jchallis··on Ask HN: I got into MIT. Should I go?
Just a message from someone who faced a nearly identical choice 20 years ago: 1) Whatever you choose, you will likely have a good education and a great career. Celebrate this. 2) You are much more likely to regret turning down MIT than taking on the extra debt.

I opted for the full ride at State U and had a very good education and a great career graduating with zero debt along with meeting the wonderful woman who became my wife. I owe a lot to State U who in my view invested way more in me than I ever invested back in them.

But State U's credibility only extended within the borders of the state and I ended up, like you described, going out of state to Prestigious U for my PhD. And there was definitely a cost - I did not have the peer education, easily open doors, etc. that would have been there had I turned down State U. I've definitely had moments in my career where doors were closed that would not have been had I opted for the heavier debt, better option.

Whatever you choose if you feel it would help for someone a little closer to your parent's age to make the case for your choice, I'd be happy to do that. I felt no one was able to talk sense to my parents and they were absolutely not listening to me at the time. I've got a lot more notches on my belt and can usually be persuasive however you think the decision should go.

Let me know.

jchallis··on Ask HN: Is Your Child Lonely?
My children are sufficiently distinct as to need different answers. Key feedback: parents often don’t choose same approach for different kids.
jchallis··on Ask HN: How many hours a day/week to you read books?
I'm a pretty solid 1-2 hours per day. This increased a lot after I had children and needed a healthy outlet. Some things to consider: - Audiobooks were pretty transformative for me. I like to run and I like to read and listening to an audiobook while running is pretty close to Zen for me. I have found that I am a lot less intimidated by "hard books" when in Audiobook form because I know I can grind my way through. I did War and Peace training for my first marathon. Audiobooks also made my commutes a lot more educational (though my children usually despise my book interests, so your mileage may vary with kids in the car). - Delete your social media. It's the new smoking and reading is a healthy habit to replace. - Whispersync between Audible and Kindle can help you blaze through a book. Read a bit at bed, listen while you do the dishes, repeat.
jchallis··on Pentagon: 7 in 10 Youths Would Fail to Qualify for Military Service (2014)
Developmental disability != mental illness
jchallis··on How nimble Keyence grew into a $140B titan
That’s a delightfully wholesome joke.
jchallis··on A mathematician's guided tour through higher dimensions
The Jordan-Brouwer Separation Theorem - which rigorously defines an inside and outside for higher dimensional objects. http://www.math.uchicago.edu/~may/VIGRE/VIGRE2009/REUPapers/...
jchallis··on What are some products and services in the US that are not in Nigeria?
Perhaps the Samwer brothers and Rocket Internet.

For those unfamiliar with the story (and which might be very useful thinking for enterprising folks in Nigeria):

https://www.wired.co.uk/article/inside-the-clone-factory

Rocket Internet ( https://en.wikipedia.org/wiki/Rocket_Internet)

jchallis··on James Loewen, Author of ‘Lies My Teacher Told Me,’ Dies at 79
I remember bringing up the racist parts of Gone with the Wind with my parents and having an extremely illuminating conversation on their thoughts and attitudes.
jchallis··on James Loewen, Author of ‘Lies My Teacher Told Me,’ Dies at 79
I grew up in the twilight of the Cold War and there was definitely a lot of side eye thrown at socialists, labor agitators and pacifists of all kinds. I did have one teacher who proudly shared Helen Keller’s letter to the students who burned her books in Nazi Germany. ——

To the student body of Germany:

History has taught you nothing if you think you can kill ideas. Tyrants have tried to do that often before, and the ideas have risen up in their might and destroyed them.

You can burn my books and the books of the best minds in Europe, but the ideas in them have seeped through a million channels and will continue to quicken other minds. I gave all the royalties of my books for all time to the German soldiers blinded in the World War with no thought in my heart but love and compassion for the German people.

I acknowledge the grievous complications that have led to your intolerance; all the more do I deplore the injustice and unwisdom of passing on to unborn generations the stigma of your deeds.

Do not imagine that your barbarities to the Jews are unknown here. God sleepeth not, and He will visit His judgment upon you. Better were it for you to have a mill-stone hung around your neck and sink into the sea than to be hated and despised of all men.

https://www.openculture.com/2017/05/helen-keller-writes-a-le...

jchallis··on 2020 Olympic Medals per Capita
There’s a meme about the United States that though we are often portrayed as fat and stupid, we do seem to win a large number of international science and sports prizes in absolute terms. This table is a good reminder that a lot of the US’ strength comes from its large population and its relative performance is not as impressive as Netherlands or Canada on many measures.
jchallis··on The Cold War Fashion Showdown
There was a vintage Wendy's ad in the 1980s that spoofed just this lack of "fashion" sense. https://www.youtube.com/watch?v=5CaMUfxVJVQ
jchallis··on Launch HN: Sane IT; mobile mechanics; chat teams; Zoom events; spas and beauty
Hi Ahmed - I'm a very heavy user of YourMechanic in the US. One of the biggest benefits I've heard for mechanics is that without the overhead of a garage they can run their own operations much more profitably. Being able to recruit good mechanics who have more favorable economics lead to happier customers.
jchallis··on Launch HN: Atmana (YC S21) – An app to help cut down on compulsive porn usage
Hi Tejas - I hope you are very successful in this venture.

I can offer a potentially helpful data point. I was on a flight once next to a gentleman who was quite high in his local LDS church (not bishop but next level down?). He railed against porn addiction specifically as the root cause of many sorts of pain, and wished there was a tool just like this to help his flock avoid the porn demon. He worked with quite a few young men who actively struggled and I think a positive tool like this could have helped those guys get what they need. If you are looking for funding, I would definitely consider that a lot of deep pocketed folks are LDS church fathers.

jchallis··on Why Cuba couldn’t control the internet
I could get Radio Havana’s English language service on my shortwave during the early aughts. I was quite deep into the central US.
jchallis··on A shift in American family values is fueling estrangement
Speaking from someone who knows - your mom wouldn’t want this choice to haunt you and would want you to find peace.
jchallis··on Tony Hoare answers questions [video]
GOAT Of All Time

We need something suitably recursive for Hoare.

jchallis··on Refusal to treat AIDS and HIV positive patients. (1987)
“And the band played on” is a wonderful discussion of the AIDS epidemic in the Reagan years. Unlike many health crises, this is one that occurred in living memory and where we have the hindsight to assess the trade offs and mania.
jchallis··on Closing the world's schools caused children great harm
Private schools in the Bay Area quickly adapted to the situation and stayed open, while even the wealthiest district public schools took a long time to follow. My two cents: school boards were much, much slower to adapt lessons from elsewhere in teaching students when compared with how fast healthcare adapted to managing patients. The lack of adaptability in a changing environment is the true damning weakness.
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