Why virtual reality cannot match the real thing

He assumed that we prefer reality. “But why?” he encouraged us to ask. Nozick's experience machine existed only in his imagination. There was no such thing as virtual reality in 1974 when he was writing. But we are now able to give ourselves computer generated experiences that are like the real thing.

from: https://www.google.com/url?rct=j&sa=t&url=http://theconversation.com/why-virtual-reality-cannot-match-the-real-thing-92035&ct=ga&cd=CAIyGjg5NjVlMGM0YzM3ZjhiODc6Y29tOmVuOlVT&usg=AFQjCNFttKLwE_x16OfQdsftz6xPaJDc2g