Samuel Koesnadi Journal

Samuel Koesnadi Journal

Sign in Subscribe

Latest — 12 Sep 2026

Why Software Is So Valuable: It Scales Without Borders

I’ve been helping my wife grow her bakery business, and one thing I’ve noticed is just how different the economics of a physical business can be from those of software. Both are great businesses, but software has an incredible level of scalability. A bakery needs ingredients, equipment, space,

More issues

The Hidden Cost of Saying Yes: Why Focus Means Knowing What Not to Build

Steve Jobs famously emphasized that focus is not just about deciding what to do. It is about deciding what not to do. Saying no to things you are interested in can be just as important as saying yes to the things that matter. I want to extend that idea with

When Closed-Source AI Becomes the New Computer

After the announcement of GPT-6 Astra, AI has become so capable that I’m not even sure whether these models are still based on traditional Transformer architectures, MoE, or something completely different. And as more of these systems become closed-source, how would we even know? That said, I

Build by Following the Market, Then Compound

Choose what to build by first looking at the market: see what people are already willing to pay for, then build toward it step by step. Keep your nose to the grindstone and focus on something where you can continuously add layers of progress over time. The key is to

About

Samuel Koesnadi Journal

Increasing certainty in an uncertain world

Topics

Business

Future