ai
Table of Contents * Chapter 0: Preface: Why I Am Building This * Chapter 1: Introduction: Building the Loop * Chapter 2: Setting Up the Workspace * Chapter 3: Modeling Messages, Roles, and Sessions * Chapter 4: The Provider Trait and a Scripted Mock * Chapter 5: Recording What Happened With an Event Log * Chapter 6:
tech
Last Tuesday night (5/19), I went to the Computer History Museum to hear Joanna Stern talk about her new book, I Am Not a Robot: My Year of Using AI to Do (Almost) Everything. This was one of those Bay Area events that felt almost too easy to attend.
concert
Not long after K-Pop Fireworks Night at Oracle Park, the real K-pop moment came much closer to my home. BTS came to Palo Alto. Technically, the venue was Stanford Stadium, not Palo Alto, and technically this was part of the BTS World Tour Arirang. But from our side
giants
The Giants are one of my favorite recurring topics on this blog, even when the team itself is not giving me much help. This season has been hard to watch in the usual torturous way of 2020s Giants baseball. Still, Oracle Park keeps pulling me back. Yes, that's
tech
Last month, I got an invitation to Stripe Sessions 2026, and I still do not know exactly why. Maybe it was because my title says Director of Engineering at Toss. Maybe it was because I have been spending too much money on AI tools, and many of those payments quietly
book
The next book club selection with Ms. Salle was the Earthsea Cycle by Ursula K. Le Guin. The first book I read in the club was The Dispossessed, and I became almost obsessed with the beauty of her prose. I even tried to imitate her writing style for a while.
ai
In the previous post, I set up Gemma 4 locally with MLX and connected it to my usual local-model workflow. That post was mostly about the environment itself: getting the model running, exposing it through an OpenAI-compatible endpoint, and making it usable from tools like Open WebUI. Once
ai
In my previous post, I explored what it looks like to run coding agents with local LLMs on an M3 Ultra Mac Studio. That write-up was mostly about the environment itself: treating a single machine as something closer to personal infrastructure, capable of hosting multiple models and running them
gamedev
Introduction I started Yogurting in 2002 at Taff System, a Korean game studio that later became NTIX Soft. I began as the lead server programmer and later took on the role of producer. This post is also available on Medium. If you’re a paid Medium member and happen to
game
This past week, Crimson Desert has been everywhere, sitting right at the center of the conversation before launch. There were interviews, technical demos, and carefully edited gameplay clips coming out of Pearl Abyss, each one trying to show a bit more of what the game could be. And almost immediately,
giants
Baseball is back now in 2026. Yes, we had the World Baseball Classic (Korea had extreme ups and downs, which was thrilling), and the Cactus League. But this past Wednesday was the real return of baseball. The 2026 season opened with a single game, just one, between the San Francisco
gamedev
Introduction Last week, I was back at GDC for the second year in a row personally (as an indie game dev wannabe). I have been coming on and off since around 2000s—not consistently, but enough times to have a sense of what the conference feels like when it is
