First-Principles Product Science

Deconstruct the system.

Fatih Yıldız is a first-principles product scientist who brings 10 years of product work together with formal training in mathematics and computer science to turn complex systems into durable product structures.

fps.fyi is an authored publication surface for essays, case studies, and operational models about product, systems, culture, and organizational complexity.

Open case studies Open writing

Operating Logic

Applied systems discipline.

Product strategy is treated as an applied systems discipline: reduce complexity to primitives, inspect incentives and constraints, and rebuild the structure where leverage is highest.

First principlesSignal over noiseStructural continuity

Operational model / success

A compact model for durable product outcomes.

P(success) = \sum (Data \times Intuition)^{10}

proof layer

Case Studies

Case Study 01

The 10-to-1 Transformation

Turning duplicated local speed into a shared production system.

When adjacent teams repeatedly solve the same problem in parallel, the organization does not become faster. It becomes fragmented, harder to govern, and more expensive to evolve.

Operating result

A shared ecosystem emerged under editorial.one, where capabilities could be produced once, maintained once, and reused across the wider system.

Team topology

4 adjacent teams

Frontend landscape

10 applications

Identity model

4 logins to 1

operating logic

Methodology

Principle 01

Complexity must be reduced before it can be improved.

Most product problems stay messy because too many layers move at once. Decomposition isolates the primitives, exposes the constraint, and removes conceptual noise.

Principle 02

Models make hidden structure legible.

Principles, mental models, and operational models turn product judgment into something that can be inspected, tested, and defended.

Principle 03

Leverage comes from rebuilding the system.

The goal is not to decorate the surface or optimize local output. The work is to reshape the underlying structure so teams, interfaces, and incentives create more value with less friction.

research journal

Writing

Essays articulate the method behind the operating decisions.

Personal systems / 9 min