For Founders.
Essays, frameworks, and diagnostic tools for people building early-stage companies — what product-market fit actually is, how to test assumptions before they get expensive, and the product issues that most often get in the way.
Begin with these.
- Article · Validation·2026-06-20·14 min read
What Is Product-Market Fit
A working definition of product-market fit, the history behind it, and the six conditions every venture-scale company must satisfy.
- Article · Validation·2026-06-30·10 min read
Understanding Falsifiable Tests
A working definition of falsifiable tests, the components that make them rigorous, a template for structuring them, and a real-world example.
Everything for founders.
- Article · Venture Studios·2026-10-03·6 min read
Zero Vector AI Use Policy
Our operating policy for AI: where it strengthens our work, the approvals and human judgment that always govern it, and how we handle disclosure, mistakes, and information protection.
- Article · Venture Building·2026-08-06·22 min read
Common Product Issues That Prevent Product-Market Fit (Part 1)
A catalog of the recurring product issues that keep pre-seed and seed startups from reaching product-market fit, starting with the first six.
- Article · Venture Building·2026-07-03·9 min read
Why We Focus on Product
A working definition of product, why it sits upstream of GTM, sales, and engineering, and why Zero Vector treats it as the core driver of startup success.
- Article · Validation·2026-06-30·10 min read
Understanding Falsifiable Tests
A working definition of falsifiable tests, the components that make them rigorous, a template for structuring them, and a real-world example.
- Article · Validation·2026-06-20·14 min read
What Is Product-Market Fit
A working definition of product-market fit, the history behind it, and the six conditions every venture-scale company must satisfy.
- Article · Venture Building·2026-06-07·22 min read
The Insurgent's Playbook for Startup Founders
Insurgency research is one of the clearest playbooks ever developed for how the weak beat the strong. Founders should pay attention.
- Article · Venture Building·2026-06-07·18 min read
The Nature and Character of War
Why founders and investors repeatedly prepare for an environment that no longer exists.