Why Citi Lost $500M? Bad design, fat fingers or something else?

Lessons in decision-making to counter human frailty.

(Photo by Brett Jordan on Unsplash)

By now all of us are probably aware of the Citibank fiasco that caused them to payout approx. $500M to businesses who refused to return the funds sent in error. A judge first ruled against Citi and Citi prevailed on appeal.