Writing
What I try and what I learn. Every claim is provisional and comes with the conditions that would prove it wrong.
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Sometimes you need to go all the way.
Here's something I thought about yesterday while lifting heavy again after a long time. For a while, I'd almost…
Nine months: from search box to automated briefing
Six months ago, once I started using Open Claw, I got seriously into automation. While building various…
From using AI well to redesigning how we work
Using AI well is no longer something to boast about — it's fast becoming table stakes. What matters now, I've…
Elev8 AI Leadership Lab
This was genuinely the most enjoyable event I've attended in months, and the one I walked away with the most…
Ralphthon: a day with builders
As always, the biggest challenge for a Seoul event was the drive from Suwon to Seoul. It's like that every…
I wanted AI to keep working even while I play
Even if they end up running the world someday...
More than the model: when humans step in
One insight I've gained from spending weeks building systems with AI is that what matters isn't which model…
Judging the PMI APAC Student Competition 2026
Two weeks ago, I had the privilege of serving as a Judge at the PMI APAC Student Competition 2026. When I…
Reading Google's Frozen MTP paper
I took a shot at interpreting Google Research's recently published 'Frozen Multi-Token Prediction' paper from…
Three pens I already owned
Toward the end of last year, I decided I wanted a new ballpoint pen to clip into my Franklin Planner. My old…
Automating my AI ecosystem briefing
Ever since I decided to actively make use of AI, the thing I've consistently pursued is: "I play, and AI…
I go home when the tokens run out
This quarter, every weekend I ‘commute’ (sort of) to a personal office I rented near my house, where I've…
Big Tech earnings: ROI is now the yardstick
Watching Big Tech's recent earnings releases, I sensed a real inflection point. The market is shifting away…
Running Gemma 4 on a Mac mini
What I was most curious to try was installing Gemma 4 on my Mac Mini, so I spent about two days running it…
Elev8 Founding Night
Getting to meet people I rarely have the chance to meet, hearing fascinating stories across different…
The day a ten-year-old wristband snapped
The rubber band I'd worn on my right wrist for years finally snapped this morning. If you look closely, it…
AI study, March: 'What would I use this for?'
The original plan was to talk about how to use Open Claw. But as I actually set it up and used it myself, I…
Helping people get started
One of the things I've focused on most since 2026 began is working on becoming more comfortable and effective…
Trial and error with OpenClaw
Lately, as I've been tinkering with OpenClaw in various ways, I've been going through quite a lot of trial…
Restarting our AI study group
To ease that fear even a little, and to understand AI better by actually using it myself, I started an AI…
How Sim-to-Real changed robot learning
Lately, as I browse various IT news, robots keep coming up alongside AI as a hot topic. It naturally takes me…
High turnover and the culture question
One of the things that surprised me most since joining Coupang is how much more frequently people change jobs…
AI wearables: from fun to useful
I recently read a TechCrunch article about AI-powered wearables suddenly getting a lot of attention.…
Coupang launches FIDO passkeys
Happy to share the official announcement of our FIDO Passkey at Coupang! As a Project Manager on this…
Technology accumulation vs. tech-debt repayment: Galaxy XR
Today I'd like to share some thoughts on Technology Accumulation and Technical Debt Repayment. Samsung…
Earning my KAC coaching certification
I already knew the concept of coaching, but I decided to actually learn it when I changed jobs last year. A…
The government data-center fire, and why DR is hard
A fire recently broke out at a government data center, and recovery is still underway — you can still see the…
An evening with the Queen Elisabeth Competition winners
Thanks to my wife, I went to see a performance today by the pianists who took 1st and 2nd place at the Queen…
What global R&D really is
Global R&D used to be understood mainly as offshoring or a way to tap into cheaper labor. Today, though, it's…
Why global R&D?
According to WIPO (the World Intellectual Property Organization), global R&D spending in real terms has grown…
One year at Coupang — my expertise is global R&D
Over that year, the most important thing was adapting to a new environment while also delivering results…
Notes on chapter one of a book on developer careers
I've read Chapter 1 so far, and I wanted to share some thoughts and takeaways. Chapter 1 hit especially close…
The AI-strategy question no one raised a hand for
At the end of 2023, I attended the Dong-A Business Forum, themed “The Era of De-risking: AI Innovation and…
Weeks two and three at Coupang
After doing my Week 1 Retrospective on joining Coupang, things got hectic again for a while, so now I'm…
My first week at Coupang
As someone experiencing a job change for the first time, my first week genuinely felt like a whole new…
Leaving Samsung — thank you for 20 years
[Eng] As of July 2024, I leaved Samsung. Since joining the company in 2005, I’ve had the privilege of working…
Wrapping up Marketing Strategy in my EMBA
Thank you Prof. Girish Mallapragada. It was great starting to understand what Marketing is. Have a nice…
Judging again — the middle-school division
This is my second year doing this, and this time I was on the judging panel for the middle-school division.…
Even in a pandemic, make time for hobbies
Even though we're under COVID-19 pandemic, we need to have time for hobbies. It makes us more active and be…
Judging the Samsung Junior Software Cup
#SamsungJuniorSWCup in Korea. It's hosted by #Samsung and sponsored by the #MinistryofEducation. It's…
Appointed in-house lecturer on effective communication
#MobileCommunicationBusiness at #Samsung Subject is an effective #communication skill.
Course note: what makes technical projects different
It's pretty much helpfully to figure out what is differ between technical projects and others. In addition…