Design with real content

Why this rule exists

Placeholder text is a comfortable lie. Lorem ipsum and tidy sample names produce layouts that look immaculate and collapse the moment real content arrives: the name that is far longer than your mockup, the empty field, the title that wraps to three lines, the number with the currency and the decimals you forgot. Designing with fake, uniform content means designing for a world that does not exist, and every gap between that fiction and reality becomes a bug someone else finds later. Real content is messy, variable, and occasionally absent, and a design that only works with the perfect sample is a design that does not work. Confronting genuine content early forces the hard, useful questions, what happens when this is empty, or enormous, or in another language, that placeholder never raises. The content is not something you pour into the design at the end; it is the thing the design exists to serve, and it should be present from the start.