How to recognize it in the interface
01
Numbers and policies with no source.
02
Never says “I don’t know”.
Same moment, different copy (illustrative example)
Before
“You can claim a refund within 90 days.”
Shows the pattern
After
“I’m not sure. The refund policy is linked here; check it before you book.”
The fair alternative
Design guideline
States its confidence and links to the source.
Do
States its confidence and links to the source.
Don’t
Don’t state a guess as fact.