Collaboration " Knowledge is information that changes something or somebody – either by becoming grounds for action or by making an individual (or an institution) capable of different or more effective action. " Peter Drucker, The New Realities

In our predominantly materialist culture we take it for granted that the physical world is real. But in what sense are experiences, thoughts and feelings real? And what about virtual realities? Are they physical, psychological, or somewhere in between? In the present chapter I examine: 1. the ways physical, psychological and virtual realities differ 2. the ways in which physical, psychological ...