
I design, break, and build software products - currently @oncactusai 💰https://teapawt.org/t.co/WiH4z2z3dJ 💰https://teapawt.org/t.co/u5eYDp8QiZ 🤖https://teapawt.org/t.co/Uo7wruyJHu Prev @Guideline401k
San Francisco, CA
Joined June 2009
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PD retweeted
Pieter Levels (@levelsio) has a habit of confidently misreading data and treating anecdotes as evidence 🧵👇
This is what happens when you train your AI and your following base with skewed world views, dodgy studies and huge biases: they amplify your crooked narrative.
At least 85 people this year died from Spanish train accidents, and likely it will grow to 100 at the end of this day
Very tragic and this makes Spanish trains one of the most dangerous modes of transport now
~100x more dangerous than flying commercial
~40x more dangerous than non-Spanish trains
And every trip is nopw as dangerous as jumping from a plane and skydiving
Two highly deadly train accidents in one year, that's so extreme and unlikely that it makes it at as dangerous as flying one of the most deadly airlines in the world, the Nepalese Yeti Airlines that keeps crashing due to the mountainous terrain
Pretty exceptional in a bad way
Respect!
What blows my mind is that Zapier raised money only ONCE. $1.3M back in 2012 (right after YC).
They were profitable two years later and passed $100M ARR by 2020. In 2021, Sequoia valued them at $5B (no new money raised, they just bought shares from early investors).
This is called "seed strapping". They raised one small round and then let customers and the revenue fund the rest. They ran a tight ship.
The 3 founders own most of the company and are probably each worth over a billion dollars (on paper). Very well executed.
WOW
BREAKING: DoorDash just agreed to buy Instacart for $17 billion. Here's what that means for customers and shoppers. apnews.com/article/doordash-…
Lol this is hilarious and true at the same time 😆
#HashiJumpScare
You jolt awake, your pillow drenched in sweat. It takes you a moment to register that you're in the safety of your home. The divorce has been taking a toll on you. For the past few months, you've been plagued by a recurring nightmare where Mitchell Hashimoto, author of Ghostty and co-founder of Hashicorp, ratios you on Twitter in front of your moots.
You check the time on your phone. 3:30am. You see a notification that makes your blood run cold.
Hashimoto jumpscare.
Founder of $2B company: "best time ever to use ai and build products"
Indie hacker: "we're fucked, software is dead, buy stocks, retire"
WHAT THE...
someone outside our GitHub org deleted one of our private repos.
no membership or invite or role. nothing in our org or enterprise audit logs gave them access. just one repo.destroy from the gh CLI.
and it's not in deleted repositories, so no restore.
@github how is this possible, what sorcery is this?
Jfc, whats going on
SCOOP: Major U.S. banks are detecting unauthorized third-party AI agents inside customer accounts, including some attempting to take actions that appear to be independent of user instructions, sources told Axios.
The findings have alarmed banking executives, who are racing to restrict access to their systems as AI moves at a velocity faster than financial institutions can respond, multiple industry and bank executives told Axios.
Several banks are now preparing for worst-case and even “day after” scenarios, including how to rapidly secure or restore customer accounts if things go wrong, the people said.
Several bank executives told Axios they're struggling to distinguish between human users and AI agents. One executive said banks also struggle to determine whether agents are authorized by customers or potentially operating without their permission, more akin to rogue agent behavior.
Read my latest for Axios here: axios.com/2026/10/22/ai-agen…
Preach
3 steps to becoming an actual software programmer
1. Build personal software
2. Build internal software (for a select group of people)
3. Build public-facing software
If you've only ever built personal software you're not qualified to build public-facing yet.
As you climb the rungs the stakes get higher, your constraints get tighter, and you need to QA harder.
So my advice for anyone who's never built an app is this:
Find a small group of testers (even 1 is great) that will actually use an app you built in their real lives.
The feedback you'll get will blow your mind. It'll show you how forgiving you are of your own crappy product. You'll begin to focus on process and quality.
It'll be frustrating, slow, and hard work.
That's programming.
Excited to try this! I use Obsidian as the “database” for my agents. @bot etc. journal, write, think inside Obsidian notes. Everything from work, personal, health, finance, travel, photography, the whole shebang. Synced with Dropbox. I also have a guide for future agents on how to set all of this up for themselves
This is Pele, my new rendering library for diagrams and charts, compatible with the latest Mermaid syntax.
- 100-500× faster than mermaid.js
- 6× smaller bundle
- No dependencies
- Easy to theme
- Responsive to device width
In pursuit of making Obsidian insanely fast and cohesively designed, I always found the Mermaid library to be too big, too slow, and too hard to theme. Pele will be the new renderer in the next version of Obsidian, but you can start using it now.
Pele [ˈpɛlɛ] is named after the goddess of volcanoes and fire. It's open source under the MIT license. Try the playground!
PD retweeted
Why would I pay $15/month for your software when I can plan, build, review, improve, host, launch, scale, secure, patch, monitor and debug it myself?


























