In fact, the "book" which you see on the screen exists for only so long as you read it. The primary copy resides in the memory of the computer or on disk, while the computer creates an electronic copy for you to read. If you are also able to write on the book - to add to it or to make changes - the computer will then store your version when you "save" it, but the version which you next see on screen will be a copy of your version rather than the stored version itself.
Dr Ju Gosling aka ju90's ABNORMAL: How Britain became body dysphoric and the key to a cure is available now for just £3.09 for the Kindle or in a limited-edition hardback with full-colour art plates for £20 inc UK postage and packing. |