Essays Design Engineering Interviews About

Writing at the edge of design, technology, and what comes next.

Design

The Art of Slow Interfaces

In an industry obsessed with speed, we've forgotten that some things should take time.

Marcus Ellroy / March 14, 2026 / 9 min read
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How We Rebuilt Our Design System Without Breaking Production

Eighteen months. Three false starts. One complete token overhaul that almost broke everything. Here's how we migrated 240 components to a new design system — with zero downtime and only two incidents — and what we'd do differently.

The Typography Decisions That Define a Brand

Before color. Before layout. Before photography. Typography is the first signal your brand sends. Most companies get it wrong not because they chose a bad font — but because they never made a decision at all. On finding type that has a voice.

Edge Functions Are the New CDN

The CDN was a revolution in serving static assets. Edge functions are the next one — except this time, we can run logic at the edge, not just files. Here's why I've moved every new project to edge-first architecture and what I've learned after a year in production.

Against Personas: A Case for Real User Research

We've been creating fictional characters with stock photos and made-up backstories for 20 years and calling it "user research." Personas survive because they're comfortable — they never argue, never surprise you, and never reveal that your assumptions were wrong. It's time to retire them.

Interview: Designing for Accessibility Without Compromise

Rena Morales has spent 12 years making the case that accessibility isn't a constraint — it's a quality signal. In this conversation, she talks about why "accessible design" is redundant, the WCAG audit that saved a $4M contract, and what teams still get catastrophically wrong.

The 6 Principles I Use to Review Any Interface

After 11 years of design reviews across startups, enterprise, and everything in between, I've distilled my process to six questions. They work for an MVP landing page and a complex SaaS dashboard equally. If you can't answer all six, the design isn't ready.

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