Elon Musk became the world's first trillionaire on Friday after shares
of SpaceX rose 20% from their initial public offering price of $135 ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ 


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TLDR

TLDR 2026-06-15

📱

BIG TECH & STARTUPS

ANTHROPIC SHUTS DOWN FABLE, MYTHOS MODELS FOLLOWING TRUMP ADMIN
DIRECTIVE (2 MINUTE READ) [4]

Anthropic has shut off access to its Mythos 5 and Fable 5 models. The
US Commerce Department has issued a directive that subjects the new
models to export controls restricting their use anywhere outside of
the US. Anthropic says the only way to ensure compliance is to
completely cut access until the issue is resolved. Access to other
Anthropic models is not affected.

ELON MUSK BECOMES THE WORLD'S FIRST TRILLIONAIRE (9 MINUTE READ) [5]

Elon Musk became the world's first trillionaire on Friday after
shares of SpaceX rose 20% from their initial public offering price of
$135. Musk was already the world's richest person, claiming the title
from Jeff Bezos in 2021 with a net worth of over $185 billion. His
worth is now equivalent to more than 3% of the US gross domestic
product. It is five million times as large as that of the typical US
family.

🚀

SCIENCE & FUTURISTIC TECHNOLOGY

NUCLEAR CLOCKS TICK FOR THE FIRST TIME (3 MINUTE READ) [6]

Chinese and European research teams working independently have both
achieved building a working nuclear clock. Both exploit the nucleus of
a thorium-229 atom to keep time with extraordinary precision. Building
a working nuclear clock has so far proven to be challenging, as the
required laser light sits in a part of the spectrum that is
technically challenging to generate and control. The Chinese team used
a more powerful laser, while the European team worked with a crystal
containing a higher concentration of the thorium nuclei.

NEW CRISPR TECHNIQUE SELECTIVELY SHREDS CANCER CELLS, INCLUDING “UNDRUGGABLE” CANCERS (5 MINUTE READ) [7]

Researchers have created a new CRISPR-based approach that can
selectively destroy cells carrying a mutation in a tumor suppressor
found in nearly half of cancers and up to 70% to 90% of cases of some
of the most difficult-to-treat cancers. The new approach harnesses
CRISPR's ability to find cells with specific mutations and uses its
cutting ability to selectively destroy those cells. Making treatments
for different cancers using this technique is faster than making a
small molecule drug or antibody therapy. Delivery remains a challenge,
but a combination of therapies may prove useful for some cancers.

💻

PROGRAMMING, DESIGN & DATA SCIENCE

YOU SUBSCRIBED TO SENTRY. HERE'S HOW TO GET THE MOST OUT OF IT
(SPONSOR) [8]

Think of this three-part workshop series [8] as Sentry 201. Session 1
covers integrations & sampling, Session 2 tackles debugging with
traces, logs, & metrics, and Session 3 is on agentic workflows using
the Sentry MCP, CLI, and Seer. Tap into all the value Sentry offers
starting June 24. Save your spot [8]

PONYTAIL (GITHUB REPO) [9]

Ponytail is an AI senior developer. It produces efficient code at low
cost and at fast speeds. Ponytail works with every model. Examples and benchmark comparisons are available in the repository.

THE LOG IS THE AGENT (11 MINUTE READ) [10]

While the model, runtime, and loop matter, those things aren't the
agent. The agent is the history of events that make up its data. This
log allows agents to be reconstructed correctly and resumed. The
concept of agents as logs unlocks a whole set of capabilities that
make even advanced agent use cases easier to reason about and build
into everyday applications.

🎁

MISCELLANEOUS

TLDR IS HIRING A SENIOR PMM ($180K-$225K BASE + $40-50K ANNUAL TARGET
BONUS, FULLY REMOTE) [11]

We're hiring a senior PMM to own product marketing at TLDR. You'll
define our positioning, build out sales enablement, and lead every
launch. Learn more [12].

APPLE'S NEW SIRI IS JUST GOOD ENOUGH TO EASE ITS AI CRISIS (13 MINUTE
READ) [13]

Apple's Siri now works the way it's supposed to. The latest update
doesn't do anything revolutionary or innovative, but it shows how
Apple has finally entered the modern AI market. The new Siri is
roughly competitive with where the leading chatbots were about six
months ago. Apple's preinstalled functionality is now competent enough
that many users won't need competing AI services.

META'S MONTHS-OLD AI UNIT IS A SOUL-CRUSHING GULAG, SAY THE ENGINEERS
STUCK INSIDE IT (3 MINUTE READ) [14]

Meta employees don't think it's a happy place to work at, especially
given the seemingly endless layoffs the company has executed over the
last few years. The company's Applied AI team is reportedly on the
verge of revolt. One of the group's live-streamed, employee-only
presentations was interrupted earlier this week with an
expletive-laden meltdown targeting a senior Meta AI executive. Many
employees in the group say they were forced into the group with no
real choice and that the work inside the unit was soul-crushing.

⚡

QUICK LINKS

EVOLVING FROM VIBE CODING TO AGENTIC ENGINEERING (SPONSOR) [15]

Vibe coding brought AI into development quickly, but production needs
more structure. Agentic engineering embeds AI into workflows with
oversight, helping developers build, review and ship software at
scale. Dive deeper into the shift [16]

HAS AI ALREADY KILLED HOW-TO NONFICTION? SALES TRENDS, MY PERSONAL
DATA, AND WHAT IT MIGHT MEAN FOR THE FUTURE (12 MINUTE READ) [17]

The market for information is collapsing into the chatbot.

INSIDE THE ROOM WHERE AMERICA'S BRIGHTEST GAME OUT HOW TO AVOID AN AI APOCALYPSE (7 MINUTE READ) [18]

Political polarization makes ambitious changes difficult, but
inaction would be far more costly.

LEAVING MOZILLA (24 MINUTE READ) [19]

JR Conlin is leaving Mozilla on July 21 after more than 15 years.

BULLISH OR BEARISH ON SPACEX? TRADE BOTH WAYS WITH SPAL & SNK
(SPONSOR) [20]

For traders seeking a position, SPAL (2x Daily Long) and SNK (2x
Daily Short) are designed to help capitalize on daily price movements
and tactical market opportunities

Explore SPAL & SNK [20]

PROP-FOR-THAT (GITHUB REPO) [21]

prop-for-that exposes what JavaScript knows, but CSS can't see as
live CSS custom properties.

SPACEX'S PRESIDENT IS FLOATING A TESLA MERGER AS THE COMPANY BEGINS
TRADING (3 MINUTE READ) [22]

SpaceX President Gwynne Shotwell declined to rule out a future merger
with Tesla while tempering expectations about timing.

SOFTWARE IS NOT A SINGLE-PLAYER GAME (14 MINUTE READ) [23]

Building dependable software that lasts and grows will always remain
a multiplayer game.

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Thanks for reading,
Dan Ni [30] & Stephen Flanders [31]

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[4] https://arstechnica.com/ai/2026/06/anthropic-shuts-down-fable-mythos-models-following-trump-admin-directive/?utm_source=tldrnewsletter
[5] https://links.tldrnewsletter.com/qb1O5j
[6] https://links.tldrnewsletter.com/0cxDla
[7] https://innovativegenomics.org/news/crispr-technique-selectively-shreds-cancer-cells/?utm_source=tldrnewsletter
[8] https://sentry.io/resources/201-series/?utm_source=tldr&utm_medium=paid-community&utm_campaign=brand-fy27q2-201workshop&utm_content=newsletter-secondary-201-workshop-register
[9] https://github.com/DietrichGebert/ponytail?utm_source=tldrnewsletter
[10] https://links.tldrnewsletter.com/YNZszp
[11] https://jobs.ashbyhq.com/tldr.tech/4028e55e-b0f0-433c-8f61-8886d7e07c29?utm_source=tldrnewsletter
[12] https://jobs.ashbyhq.com/tldr.tech/4028e55e-b0f0-433c-8f61-8886d7e07c29 [13] https://links.tldrnewsletter.com/X5LYSz
[14] https://techcrunch.com/2026/06/12/metas-months-old-ai-unit-is-a-soul-crushing-gulag-say-the-engineers-stuck-inside-it/?utm_source=tldrnewsletter
[15] https://www.ibm.com/think/topics/agentic-engineering?utm_content=PVLWW&p1=Display&p2=448006756&p3=247627917&utm_term=30A06&utm_source=tldrnewsletter
[16] https://www.ibm.com/think/topics/agentic-engineering?utm_content=PVLWW&p1=Display&p2=448006756&p3=247627917&utm_term=30A06
[17] https://tim.blog/2026/06/12/has-ai-already-killed-nonfiction/?utm_source=tldrnewsletter
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[19] https://blog.unitedheroes.net/5751?utm_source=tldrnewsletter
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[21] https://github.com/argyleink/prop-for-that?utm_source=tldrnewsletter
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[31] https://twitter.com/SteveFlanders22
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[33] https://a.tldrnewsletter.com/unsubscribe?ep=1&l=cfa2d55a-b7be-11e8-a3c9-06b79b628af2&lc=265280dc-d4e0-11f0-a661-1b9fa34a893d&p=cf9399b2-6895-11f1-aa03-85fcef8b11be&pt=campaign&pv=4&spa=1781517659&t=1781519199&s=d91bab51e81967c3eedc0ea0628f0c4a6ce0371b343623c008347e4e234385c1

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