We design with ideal conditions in mind, but the world is far from ideal.
Design Under Pressure is a practical resource center to help you and your team proactively create products and services that hold up under stress cases.

When an aspect of a person or a context is pushed to an extreme, that's a stress case. Nobody is normal. As appealing as your "target demographic" looks, you don't actually control who will show up to use your design, and people are... well, human. That patient, reasonable, calm, healthy, able-bodied, literate, accurate, safe, well-intentioned, and happy user in your mind's eye doesn't actually exist. And, of course, people and environments that aren't "users" in the classical sense are very much part of your design.