The brief didn't come from a client or a stakeholder deck. It came from a regulatory standard for medical software, the kind where a bad decision doesn't just look wrong, it can cause real harm to someone relying on the product to do their job safely.
I expected that to shrink the design space. It did the opposite.
Constraints remove the easy wrong answers
Without hard rules, every decision becomes a negotiation between taste and time, and taste usually loses to a deadline. With a regulation setting the floor, entire categories of bad shortcuts were off the table before the conversation started. Contrast ratios weren't a debate. Error states weren't optional polish. The regulation had already ruled on the easy wrong answers, which left more energy for the hard right ones.
Compliance sets the floor. It never once told me what to build on top of it.
Safety-critical work rewards precision, not decoration
Every pattern had to earn its place by being tested against real clinical workflows, not just critiqued in a design review. That single filter, will this hold up for someone using it under pressure, quietly raised the bar on everything, including the parts nobody was regulating.