Maurice Kelter

Writing

Thoughts on running, building products, and angel investing. Published on Substack.

Coming soonInvesting

Gaming as an Innovation Hub

Coming soonBuilding

The Marginal Cost of Innovation is Going to Zero

Building

Grab Your Harness!

Everyone's been watching the models get smarter. Bigger context windows, stronger reasoning, better instruction-following. But that's only half the story. The more important question is what turns a model into something people actually use — and the answer is the harness.

Read on Substack
Investing

Compounding: Creation, and Quiet Destruction

Compounding is one of the most powerful forces in the world. At its best it builds wealth, knowledge, and trust — slowly at first, then all at once. But compounding is indifferent. It doesn't care whether it's amplifying something true or false, good or bad. That's where it becomes dangerous.

Read on Substack
Running

Ultra66: One Kilometre for Every Year

I ran 66km to mark my mother's 66th birthday and raise money for a cancer support charity. Cars beeping, people clapping from doorsteps, strangers cheering from the side of the road. We raised over €18,500.

Read on Medium
Business

The Future of Productivity

Productivity is output per head. It has always been driven by tools and technology. The question now is whether brain-computer interfaces like Neuralink represent the next leap — and whether humans can stay relevant alongside AI.

Read on Medium
Business

Do You Want to Achieve Perfection?

Shokunin — the Japanese pursuit of perfection for some greater good. Through Bob Iger and legendary sushi chef Jiro Ono, a case for what mastery actually looks like when you commit to it completely.

Read on Medium