The document discusses how Medium prioritized quality in its design and launch. It summarizes how Medium:
1) Designed the interface and user experience to invite high-quality content by making writing and publishing feel polished and professional.
2) Launched with established authors who set a high bar for content quality, and hired an editor to curate content.
3) Focused extensively on typographic details, layout, and promoting substantive comments to differentiate the experience from other publishing platforms and compete with print.