Assume That Something Will Go Wrong
- The reality is that something always goes wrong. Everyone makes mistakes.
- It's very difficult to create a system that is free of all errors, and that guarantees that people won't make mistakes.
- The more costly errors there are, the more you need to avoid them.
- The more you need to avoid them, the more expensive it is to design the system.
- If it's critical that people are not making mistakes, then be prepared.
- You'll have to test two or three times more than usual, and you'll have to train two or three times longer.
- It's expensive to design a fail-safe system. And you will never fully succeed.
The Best Error Message Is Not Error Message
- Error messages is the part of a device or software program that gets the least amount of time and energy, and that might be appropriate.
- The best error messages are no error messages.
- But when something goes wrong, it's important that people know what to do about it.

	Created by Paul S. over 4 years ago

Slide Set on 85: People Will Always Make Mistakes; There is No Fail-Safe Product, created by Paul S. on 23/01/2020.