01 / THE IDEA
What does it mean?
Remove conditions that make mistakes easy. For actions with serious consequences, explain what will happen and give people a chance to confirm.
02 / IN PRACTICE
Make it concrete.
Illustrative example: When someone clicks “Delete account,” explain what data will be permanently lost and ask for confirmation before completing the irreversible action.
03 / WHAT TO WATCH FOR
A common mistake.
Adding confirmation dialogs for every harmless action until people ignore them.
04 / WHEN IT HELPS
When should you use it?
When users can make costly, destructive or hard-to-reverse decisions.
05 / FURTHER READING
Explore the source.
Nielsen Norman Group — Error Prevention ↗This is a reference for further learning, not an endorsement or a verbatim quotation.