During one week in April 2011, I asked more than 250 people from different areas in London about mistakes they had made in their life, and the lessons they had consequently learned. I then asked each person to write down the mistake and lesson learnt on a 'learning receipt'.
The receipts were then displayed as the word 'ADVICE'.
The concept stemmed from the question 'what is the price of advice?'. If the information is greater in price is it better advice? How well does the person you are paying know you or understand you?
I wanted to communicate that advice should be paid for with a person's mistakes, rather than money. Displaying the receipts also allowed new and different viewers to learn from other people's mistakes.