error prevention

usabilityerror preventionsystems design

The Wrong Line at the End of the War

How one misplaced signature on Japan’s surrender document exposed the hidden choreography inside every form.

usabilityinteraction designerror prevention

The Ballot That Made a Vote Point Sideways

What the butterfly ballot teaches us about alignment, error costs and the danger of interfaces that cannot confirm intent.

systems designerror preventionhuman factors

The $125 Million Unit Label

The Mars Climate Orbiter was lost at the boundary between two teams—and that boundary is where many systems actually fail.

human factorserror preventionsystems design

The Word “Takeoff” Had Two Meanings

The Tenerife airport disaster shows why critical systems cannot rely on language that merely sounds understood.