I liked the article, reminds me of ‘The Matrix’, Neo believed he lived in the ‘real’ world but it was in fact a computer generated environment, the sensory inputs were not real but were real to him, so in a sense this place that we call reality is not much different. Also reminds me of when I was at college studying psychology, I was very interested in the study of depth perception, when babies first realise that the world is not a 2D image which is projected onto their retina, it is 3D and you can move around in it.