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Page Roulette

I had some free time over Memorial Day, so I finally built something I’d been thinking about for a while. I decided to let AI redesign my personal page — and refresh it every day. That’s how Page Roulette was born. I created a few templates, picked color palettes and fonts I like, and locked in the text and photos that should never change. Then every night at 12am EST, a GitHub Action runs, sends my design notes to the OpenAI API, and comes back with instructions for a new version of the site.

Blog by Sergey Kaplich · EN

Draw me a picture

A few years ago, a friend of mine, Arthur — developer and a proud boat captain — told me about an idea he had: connect a mini computer to a printer on his boat and ask people to send him emails. If someone sent one, it would print right there on board. I always thought it was a really great idea. I’m not sure if he ever built it, but I couldn’t stop thinking about it. So I built my own version. I dug out my old Raspberry Pi — the one my friend Daniel gave me years ago when I was just learning

Blog by Sergey Kaplich · EN

I start to like AI art

I've always had this thing for visuals. I studied art and architecture, spent years learning to see the world through composition, proportion, light. I even wear Figma cap! That instinct to create never really left, it just ran out of room somewhere between deadlines and everything else life piles on. Honestly, for a long time I thought AI image tools were just a cute toy. Fun to poke at for five minutes, nothing serious. And I get why people feel that way: you can spot lazy AI slop from a mil

Blog by Sergey Kaplich · EN

I built the budgeting app I always wanted

When I started my professional career, my financial life was not perfect. I was not making much money, and because of that, I had a pretty flawed idea about budgeting. My thinking was simple: if there is not much money, what is there to budget? Looking back, that was completely wrong. Budgeting is not about how much you make. It is about knowing what you actually have. That realization took years to arrive. But when it did, it changed how I thought about money entirely. One night I realized

Blog by Sergey Kaplich · EN

C'mon Apple, you can do better than this

Building my first iOS app, I figured the hard part would be the code. Turns out the hard part was Apple's paperwork. Total time from paying for the dev program to my app actually being live: three weeks. And I actually paied for that → $99/year, plus 30% of every sale. First hurdle: the tax form. There's a field for your legal name, pulled straight from your Apple account, and you can't edit it. Problem: my account didn't have my legal name on it. So the form just... wouldn't let me finish.

Blog by Sergey Kaplich · EN

Calculating Service Area, Part 3: Demographics

My Musings · EN

Calculating Service Area, Part 4: Next Steps

My Musings · EN

Stop Spacing, Part 1

My Musings · EN

Visualizing System-wide Headway

My Musings · EN

Why I'm a Luddite, kind-of (Part 2)

My Musings · EN

ICRA 2026

My experience and learnings from attending the International Conference on Robotics and Automation in Vienna

Jay Ranpariya · EN

Sleep

Personal beliefs and habits for protecting sleep: wind-down routines, light exposure, naps, plus notes on the circadian biology behind them.

Jay Ranpariya · EN

Recon

A working reference for bug bounty recon: horizontal and vertical asset correlation, subdomain enumeration, OSINT tooling, and early exploitation wins.

Jay Ranpariya · EN

Exercise

Working beliefs on training frequency, sets, and recovery, plus a running list of strength and fitness resources to dig into.

Jay Ranpariya · EN

AGI

My AGI research roadmap: sixteen subfields to work through, a month-by-month reading list built like a self-taught graduate seminar, and the people worth following.

Jay Ranpariya · EN

Forgotten Legends

A gallery of overlooked minds in computation, information theory, physics, and cognition, thinkers whose ideas outran their fame.

Jay Ranpariya · EN

building better judgement

Things are moving fast, edge remains in being able to figure out what's going to grow.

Jay Ranpariya · EN

neuro-inspired ai

How do nervous systems learn, remember and adapt, and how can we use principles behind them to build better AI and Physical AI?

Jay Ranpariya · EN

EHI → FHIR mappings that get better with every record

Rebuilding (and improvig) Epic's FHIR from one patient's EHI export -- and how a tiny community of data contributions could cultivate a new kind of mapping pipeline. code: github.com/jmandel/ehi-to-fhir interactive report: joshuamandel.com/ehi-to-fhir Under ONC's health-IT certification rules, any patient can request a…

Interop Blog · EN

"Data mapping" means data missing!

Every step that requires a provider to map internal codes to external standards is a step where data drops out. If you're looking to work with health data, you might think you will be good to go when: 1. The regulations require it. 2. The standards specify how to expose it. 3. The EHR is certified to the standards. 4.…

Interop Blog · EN

Building a Greenbergolem

--- Isaac Kohane posted a challenge on April 16: build a citation-distortion network like Steven Greenberg's 2009 BMJ figure, but AI-driven and reproducible for any claim. "There is a lot of AI work in this area but none to my knowledge could reproduce the figure below. Please prove me wrong. citationNetworks" Greenber…

Interop Blog · EN

ACO Quality Reporting Options (2x2)

As I come up to speed in a new role, I'm learning a lot about how ACOs collect clinical data, calculate quality measures for CMS, and report them. The rules are... complex, especially for a newcomer. And there are multiple options with distinct requirements and implications. This article is just consolidating my nascen…

Interop Blog · EN

Medicare Wants to Rein In At-Home Health Monitoring. Is It Cutting Fat or Muscle?

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Interop Blog · EN

SMART Health Links for Imaging, Too (Or: How to Kill the Clipboard while Ditching the Disk)

TL;DR: Open a sample study and learn how the protocol works. And: spec + code on GH. I'm an unusual patient: I publish my own health records in a public GitHub repository, imaging and EHI export included. Real clinical data is scarce, and developers building health software often never see a realistic example of the fo…

Interop Blog · EN