The cosmos apprentice.
Exploring humans, systems, and the cosmos.
A notebook of essays, experiments, and observations.
What You'll Find Here
Three territories I explore, often at the same time.
Humans
How we think. Learn. Organize. Communicate. Misunderstand. The systems we build inside our heads and the ones we build with each other.
Systems
Businesses. Coffee shops. Technology. Organizations. Communities. The invisible structures that shape how things work—and break.
Cosmos
Astronomy. Physics. Perspective. Wonder. Scientific thinking. The biggest system of all, and what it teaches us about the smaller ones.
Featured Essays
Evergreen entry points into the ideas here.
May 20, 2026
Astronomy Taught Me Humility
What looking at the night sky does to your sense of scale, your decision-making, and your understanding of what matters.
March 8, 2026
AI Doesn't Replace Thinking
On the relationship between artificial intelligence and human cognition—and why the real bottleneck isn't computation but clarity.
January 19, 2026
Problems vs Symptoms
Why most 'problem-solving' is just symptom management, and how to tell the difference before investing time and energy in the wrong fix.
November 12, 2025
Why Coffee Shops Don't Actually Sell Coffee
What the hospitality industry reveals about human behavior, community design, and the gap between what we buy and what we actually want.
Current Projects
Things I'm building, running, and thinking about.
Heisen.biz
Business diagnostics and systems consulting. Translating structural thinking into organizational clarity.
NCO Café
A discussion space.
SkyLabs
Science, astronomy, and education. Making the cosmos accessible to people who never thought to look up.
Palapan
Indonesian cultural movement.
Current Thinking
I'm currently researching ambiguity in language, rebuilding a neighborhood coffee shop, and exploring how AI changes human thinking.
Updated July 2026
Reading Trails
Curated learning paths across disciplines. Not categories—connections.
Trail 1
Start here → Systems Thinking → Business Problems → Coffee Shops → NCO Café → Community Design
Trail 2
Astronomy → Cosmology → Scale → Human Perspective → Decision Making
About Hasan
I study systems. Sometimes they're galaxies. Sometimes they're businesses. Sometimes they're coffee shops. This website is where I document what I learn.