A few months ago I developed a conceptual work called Memory. Two people who know each other very well, wrote down a list of 24 things they experienced together. Both made 24 drawings of what they remember from these experiences.
What came out of this, is a totally unusable game. By trying to play the card game the two of them realized that even though they had shared the same experiences, they remembered completely different things and found other aspects important than the other person.
Soon I will be putting the documentation on Memory on this website.