Thinking outside the box, leaving predicted or predictable paths and ways of thinking provides the chance for creative solutions. Sometimes this requires to break rules. Rules - not principles. Principles stay in place and allow to continue life without any harm - by broken rules - for example.
The 2D barcode says: “Surprise by breaking the rules! Following rules produces predictable results - NICE! Breaking rules produces unpredictable resluts - SURPRISE!
The 2D barcode creator was found under http://goqr.me/