Investor · Writer · Builder
Ethan Cho
AI, business, and work.
A view from Korea.
I invest, build, and write about how technology changes the choices businesses and people make—and where Korea fits in a global market.
CIO & Partner, TheVentures · Previously Google and Qualcomm Ventures · Korean CPA · Columbia MBA
Latest · Sep 14, 2026When the People Building the Fastest AI Start Reaching for the Brakes ↗
Books & interviews
Korea & the world · Work & people · Business & money
Start with these three
The State of Korean AI
What it takes to turn Korea’s chip and manufacturing strengths into independent AI companies, overseas customers, and durable revenue.
When honest work becomes cheap
When the market price of work changes, where do human dignity, judgment, and responsibility find their value?
The Most Dangerous Customer in AI May Be the One Who Uses It Most
A paying user of multiple AI tools examines the economics of the customers who use them most.
Interview · AI Proem · English
There’s more to Korea than just chips
An English-language conversation about Korea’s AI supply chain, founders, and the next opportunities to build for global markets.
Watch the interview ↗Book · Korean-language edition · 2026
Moduui Tuja
A founder’s guide to venture fundraising
From the first investor meeting to financing terms—and the choice not to raise venture capital. Published in Korean in July 2026.
Book details (Korean) ↗Ideas I put to work
Questions from using AI become product experiments and public drafts.
Product experiment
SeoulMates
An AI tool for examining a one-line pitch before an investor meeting.
The question · What can founders prepare before they meet an investor?
AI feedback is not an expression of interest or an investment decision by an investor.
Explore the project ↗Product experiment · Korean interface
Where Am I?
A tool for checking your current location while traveling by bus or subway.
The question · Can a simpler tool show just what matters during a commute?
Location guidance depends on device permissions and supported regions.
Explore the project ↗Public draft
ATA-1
A draft control standard for AI systems that move money, covering permissions, limits, and records.
The question · If an AI system moves money incorrectly, can we establish who authorized what?
An independent v0.1 public draft, not an adopted certification program.
Read the draft ↗Keep reading.
English essays on AI, business, work, and Korea’s place in the world.