Frank van Puffelen
@puf
People + Tech = 🎉 🇳🇱 NL born, 🌁 SF based Previously: Firebase & Flutter @ Google 🔥💙, FlutterFlow 💜
A beautiful Google doodle today to celebrate the world cup final. 🇦🇷 ⚽️ 🇪🇸
All this greenery around Mount Sutro captures the fog, which makes the park a pretty constant damp spot right in the middle of San Francisco. Full post: puf.io/socials/2026-... 2/2
Mount Sutro Open Space Reserve in San Francisco has a dense forest area, with eucalyptus trees (up to 200 feet tall), and lots of underbrush (lots of ferns, blackberries, and ivy) rolling over the hills. It's a great area for intermediate-level hiking on a hot day. More 👇 1/2
❤️🌁 The Hearts in San Francisco statue series never disappoints. Here's Open Heart, which has been at the end of Pier 39 since 2014. So if you're visiting Fisherman's Wharf, grab a shot of this one after you've seen/smelled the sea lions. 🦭 puf.io/tags/hearts-i...
OK, an empty battery is prolly not the unboxing experience anyone hopes for. But look at that cute "charge me please" screen! (for those curious: PicPak uses an e-ink screen, so *showing* the image consumes zero power)
✍️ I liked the novel The Correspondent most for its form: letters and emails that slowly pull together Sybil’s upbringing, family life, and professional life. The audiobook’s almost-full-cast narration really helps the format work. ⭐⭐⭐⭐ Full review: puf.io/books/the-cor...
📚 Dungeon Crawler Carl mixes universe-building, nail-biting fight scenes, and social commentary on both our world and its universe. A fun page turner. It didn’t fully live up to the hype for me, but I’ll gladly continue the series. ⭐ 3/5 Full review: puf.io/books/dungeon...
📚 A Blink of the Screen collects 32 short fiction works by Terry Pratchett, from The Hades Business to Sir Joshua Easement. Some connect to Discworld and other works, but the collection didn’t quite work for me. Rating: ★★★ (3 out of 5) Full review: puf.io/books/a-blink...
I'm finally reading @munificentbob's Crafting Interpreters book. I initially found his explanation of how `and` and `or` are implemented confusing, which is *very* unusual for his writing. Then I read that last paragraph about the short-circuit nature of these operators and 💡
Amazon added *Alexa for shopping* to its top menu and as a (luckily dismissible) left sidebar. If anyone outside of Amazon asked for this, please raise your hand - and answer.... WHY?!?!?!?
Mount Sutro Open Space Reserve is often overlooked by visitors to San Francisco, but this centrally-located city park has some of the lushest greens with its giant eucalyptus trees and lavish underbrush on rolling hills. For more on this beautiful hike: puf.io/socials/2026-...
Yup yup, that's some brilliant UI work there in ChatGPT's submit button. /s #ui-fail
🗿 Public art alert! Check out "Fibers of Life" by The Apex. This 2024 addition to the Hearts in San Francisco series is currently brightening up China Basin Park in Mission Bay. It is perfectly situated right across from the ballpark. Go check it out! puf.io/tags/hearts-i...
📒👨⚖️ In Free Culture, Lessig argues that copyright law has drifted away from its original purpose. The book is a broad historical overview and a snapshot of early-2000s digital rights debates. My rating: ★★★★☆ (4 out of 5) My full review: puf.io/books/free-cu...
Ever wonder which of your users is eating up your Firestore read quota? Turns out Firestore audit logs + Cloud Log Analytics = a per-user read breakdown. Here's how 👇 puf.io/posts/countin...
I just read and reviewed The Correspondent by Virginia Evans, an epistolary novel told through letters and emails to and from retired, reclusive courthouse clerk Sybil van Antwerp. Rating: ★★★★☆ (4 out of 5 stars) More and link below 1/2
A good, entertaining overview of the current AI landscape/bubble﹠how we got here, the motivations of the main players, and some likely outcomes in the coming years. I doubt it’ll be the last Doctorow writes on this topic, and I’m here for future installments. 4/5
For those who read Cory’s blog (https://pluralistic.net), the book's topic﹠content will be familiar, but it was good to read it in a condensed﹠better edited format. It is mostly warnings﹠problem diagnosis with a few concrete solutions. I wish it had more of the latter. 🙏 3/5
The central metaphor is useful: * A centaur is when a human uses AI to do some of the boring or mundane stuff in their life * A reverse centaur is the dystopian version: AI does the driving, and humans fill in the gaps Think Amazon delivery drivers, or call center operators. 2/5
I read and reviewed Cory Doctorow’s The Reverse Centaur’s Guide to Life After AI, which is about what happens when we let AI do the driving and humans are left doing only the things the AI can’t. 4 stars. More ⬇️ in 🧵 1/5
We're six months into 2026 and I just posted the review for my 34th book of the year to https://puf.io/books. To see all of them on GoodReads: www.goodreads.com/re...
My reviews of: Dungeon Crawler Carl: puf.io/books/dungeon... The latest Awaken Online: puf.io/books/crucibl... 4/4
Playing as evil becomes a question about identity, morality, and what a game reveals about the person playing it. What if person playing the Good character has worse motivations than the one playing the Evil character? Both fun LitRPG book series', just… different. Links👇 3/4
Carl is clever and entertaining, but DCC puts him on a rollercoaster that he somewhat passively rides while commenting on the madness around him. In Catharsis, Jason makes bigger philosophical choices right away: he decides to play the game as an evil character. More 👇… 2/4
I've been reading the Awaken Online books since 2023, and just also started on Dungeon Crawler Carl. Both are fun, but… different. One big difference between Dungeon Crawler Carl and Awaken Online, at least in book 1, is how active the protagonist feels. More below in 🧵… 1/4
📖🕵️♀️ Back to Neptune with Mr. Kiss and Tell: wealth inequality, crime across class lines, corruption at the sheriff’s office, and Veronica’s complicated love life. Not my favorite Mars mystery, but still worth a listen. Rating: 3/5 Full review: puf.io/books/mr.-kis...
When I asked Gemini why so many Bay Area coffee shops get the milk/coffee ratio in a cortado wrong, it also gave me a short list of places that apparently get it right. The shop where I ended up today was very clearly not on that list. 😅
Dungeon Crawler Carl is a fun, punch-packing page-turner with nail-biting fight scenes, broader universe-building, and social commentary. It didn’t fully live up to the hype for me, but I’ll gladly continue the series. Rating: ⭐⭐⭐ 3/5 Full review: puf.io/books/dungeon... 3/3