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jchallis

2,000 karma · joined January 26, 2018

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jchallis··on Why a $154B CEO just endorsed stripping most Americans of voting rights
Lutke is a German who has lived in Canada for decades. Why comment on American tax policy ? Seems out of his lane .
jchallis··on Future euro banknote design proposals
As an American who proudly claims her watch “O mio bambino caro” on YouTube. I’d recognize her version anytime. Angelic.

https://m.youtube.com/watch?v=l1C8NFDdFYg&ra=m

jchallis··on Ask HN: Who is quitting? (July 2026)
Read the Wikipedia page on the sunk cost fallacy. Knowing what you know now , would you have continued down this path ? The biggest costs are always opportunity costs and investing in something that isn’t likely to pay off robs you from higher value alternatives (including rest, recharging and joining a more successful venture) .
jchallis··on AI Product Graveyard
Working on a streamlit app this second... I think its death has been exaggerated.
jchallis··on No, it doesn't cost Anthropic $5k per Claude Code user
Your instincts are good here. Whatever complexity Pizza Hut has it comes from being the weakest of the Yum! Brands siblings — KFC carries the international profit, Taco Bell owns domestic. Pizza Hut is slow growth, perpetual restructuring, and a weird inherited obligation to always serve Pepsi.
jchallis··on Scott Adams has died
Scott Adams died today. I want to acknowledge something complicated.

He always felt culturally like family to me. His peaks—the biting humor about corporate absurdity, the writing on systems thinking and compounding habits, the clarity about the gap between what organizations say and what they do—unquestionably made me healthier, happier, and wealthier. If you worked in tech in the 90s and 2000s, Dilbert was a shared language for everything broken about corporate life.

His views, always unapologetic, became more strident over time and pushed everyone away. That also felt like family.

You don’t choose family, and you don’t get to edit out the parts that shaped you before you understood what was happening. The racism and the provocations were always there, maybe, just quieter. The 2023 comments that ended Dilbert’s newspaper run were unambiguous.

For Scott, like family, I’m a better person for the contribution. I hope I can represent the good things: the humor, the clarity of thought, the compounding good habits with health and money. I can avoid the ugliness—the racism, the grievance, the need to be right at any cost.

Taking inventory is harder than eulogizing or denouncing. But it’s more honest.

jchallis··on I canceled my book deal
Tyler Cowen's GOAT book explores this in depth. Try it out! https://goatgreatesteconomistofalltime.ai/en
jchallis··on How getting richer made teenagers less free
One factor is definitely underreporting. Several “accidental deaths” in the 1950s were code for suicide.
jchallis··on Explaining the widening divides in us midlife mortality: Is there a smoking gun?
Only about half of Americans who go to college finish their degree. The saddest part of the college debt crisis are the kids with debt and no degree to pay it off.
jchallis··on Harvard Classics
And all available from Project Gutenberg! https://www.gutenberg.org/ebooks/bookshelf/40

If you are looking where to start, Mortimer Adler and Charles van Doren's "How to Read a Book" is an excellent and practical introduction to reading these books. They offer some very practical advice on how to go about this : Elementary Reading (basic decoding), Inspectional Reading(skimming for structure), Analytical Reading (deep, thorough engagement with one book), and Syntopical Reading (comparing multiple texts on a topic).

Happy Reading!

jchallis··on Three Years from GPT-3 to Gemini 3
The patent for Ozempic was filed nearly 20 years ago: https://patents.google.com/patent/US8129343B2/en?oq=US812934...

Ozempic’s FDA approval was in 2017, the same year transformers were invented.

Whatever you can place at LLMs, GLP-1’s aren’t one of them.

jchallis··on Google boss says AI investment boom has 'elements of irrationality'
Tax planning can help here. By converting the house to ownership by a tax-advantaged trust , a family absolutely can continue to extract rent from a former property without selling. Doubly so if the mortgage is paid off.
jchallis··on Goldman Pauses $2.5B Loan Sale as Investors Raise Scrutiny
Classic PE healthcare playbook hitting a wall: governance red flags (board resignations over antitrust violations), Medicaid exposure nobody’s buying their hedge on, and 5x leverage on a home health rollup that can’t get financing done at any price. Market’s saying no for good reason.

When Goldman can’t get your $2.5B home healthcare deal done in this market, and you need to come back with audited financials hoping for better conditions… the market’s already told you everything you need to know.

jchallis··on Ask HN: Turned 25, Give Me Your Best Advice for the Next 25 Years?
Good marriages are built on aligned goals : what kind of family you want, the balance between spending now and saving for the future, how you spend your time . Focus finding a partner who is aligned on where you want to go : rest will follow.
jchallis··on A queasy selling of the family heirlooms
I feel this article acutely. My mother has a house full of antiques, fine china, and silverware that she values enormously but has essentially zero market value. Most pieces wouldn’t cover my monthly electric bill.

Here’s my plan - you’re welcome to copy it:

1. Make a video documenting each piece and its story while she’s still alive. Get her to tell the family history, where items came from, what they meant to her. This preserves what actually matters.

2. Set aside exactly three pieces that genuinely speak to me. Not “might be useful someday” - just three things I actually want.

3. At the funeral, announce anyone can take anything they want to remember her by. Let family self-select what has meaning to them.

4. Donate the rest wholesale to charity. Tax deduction should be around $25k - likely more financial benefit than selling piece by piece, with infinitely less hassle.

This honors the emotional value without inheriting the burden. The video preserves family history better than storing unused objects. And it avoids the soul-crushing experience of discovering your inheritance is worth less than a tank of gas.

jchallis··on China's airlines raise alarm as travellers ditch planes for bullet trains
Miami and New Orleans are about 1800 km from New York. Denver is 2600 km from New York.
jchallis··on Oskar Kokoschka, Hermine Moos, and the Alma Mahler Doll
Tom Lehrer's tribute to Alma Mahler-Gropius-Werfel is magical. Absolutely worth the 4 minutes to listen to a woman who seduced most of the most creative men in the German-speaking world. https://www.youtube.com/watch?v=L35IiVHZBTk&t=13s
jchallis··on Ask HN: Former employees' RSUs at risk after startup's IPO
Rimon Law is fantastic.
jchallis··on Ask HN: Is patio11's salary negotiation guide relevant in today's market?
I can confirm - in the past three weeks, I requested a $5K raise in salary on offer and it was accepted in <20 seconds by hiring manager. This has a roughly $100K NPV. This is identical to the predictions in patio11's original piece.
jchallis··on Ask HN: My son might be blind – how to best support
Education for kids with special needs is one place where the best schools can be 100x a median school - it’s worth contacting the Perkins School for the Blind in Massachusetts to understand what resources you should be using now.

Speaking as a dad of kids with special needs, the goal is independent living with accommodations. What are the accommodations you can provide (cane, dog, Braille mastery) that maximizes the chance of long term independence.

jchallis··on Einstein went to his office just so he could walk home with Gödel
Would love to hear more about this. Indiscrete Thoughts is one of my favorite books.
jchallis··on Making housing more affordable means your home's value will have to come down
Globe and Mail is Canadian.
jchallis··on A new phase of matter: Physicists show non-Abelian anyons in quantum processor
Saturday Morning Breakfast Cereal’s classic strip , The Talk, is extremely well done. https://www.smbc-comics.com/comic/the-talk-3
jchallis··on Georgia needs to produce more electric power for data centers
Includes most of Tennessee as well - Nashville, Knoxville, Memphis and Chattanooga are in this group.
jchallis··on Royal Navy says quantum navigation test a success
Red October used the usual gyroscopes approach that gets more and more inaccurate as it sails. I think a key plot point is that they need to surface to take a latitude / longitude , precipitating much suspense.
jchallis··on Royal Navy says quantum navigation test a success
The big big downside of gravity waves is that they have no dipole radiators - with electric charge you have + and - and that allows very efficient propagation. For gravity there is only one charge ,and this allows only quadrupole radiation - making it extremely awful for transmission.
jchallis··on Royal Navy says quantum navigation test a success
A typical sub drifts by only a few tens of meters per day - obviously this builds up . The point of the BEC gravity map is to reduce this inaccuracy an order of magnitude, thereby extending the subsurface range of the subs.
jchallis··on Royal Navy says quantum navigation test a success
This is the most obvious practical application of my PhD topic. A Bose Einstein Condensate is an extremely sensitive detector of gravity- a nuclear submarine could use it to make an ultra-accurate map of the world based on variations in the gravitational constant g. This would remove one of the primary reasons subs need to surface , in order to GPS lock.

It’s a naval chart that would not require surfacing.

A French postdoc in my lab swore this was the moneymaker for our entire subfield, and it seems he was on to something …

jchallis··on Alien was released 44 years ago today
A super personal anecdote: my dad took my mom to see Alien on a date and realized that because she could sit through that - she was the one. They were married soon after.

Sci Fi horror is pretty close to the polar opposite of my mom’s comfort zone, so I guess watching Alien was a test.

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.
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