Participative Systems Reading

1)Can we generalize the term "participation" when dealing with art because I noticed that they are giving many aspects other than the definition itself? I would rather think of participative media as a vague definition.
2) Since the terms collaboration and and interaction are very paired with participation throughout the reading, I'm wondering if there is any clear difference between the three. In the beginning the author states that these three terms are not good unless there are purpose, creativity, and other things behind it.