ONE DESIGN · TWO WAYS
LIBRARY / SPLIT / 03 PUBLISHEDThe Daily Split.
One question, two real designs, and no definition until you have committed. Call the stronger interface, then read the receipt: the law's name, the honest fix, and why the weaker one still ships everywhere.
Same three numbers, two bar charts. Which one is lying?
Y-axis starts at 0. The bars look about as different as the numbers actually are — barely.
Y-axis starts at 96. A 2% gap now looks like one bar towers over the others.
- THE VERDICT
- B is lying
- THE LAW
- Truncated-axis distortion — Tufte's "lie factor." A bar's length is its claim, so a bar chart only tells the truth when the axis starts at zero.
- THE HONEST FIX
- Bar charts start at zero. If a real difference is genuinely too small to see, switch to a dot or line chart — where position, not length, carries the meaning — and label the range.
The lying chart
Same three numbers, two bar charts. Which one is lying?
AI thinking theater
Two AI assistants already have your answer computed. Which 'thinking…' indicator is faking the work?
The cancel maze
Both screens let you cancel a subscription. One is engineered to stop you. Which is the dark pattern?