Terza legge di Clarke "Any sufficiently advanced technology is indistinguishable from magic." Thought he wrote after the laws that "Since three laws was sufficient for both the Isaacs - Newton and Asimov - I have decided to stop here", he continued to write laws, as we can see in the Appendix 2 of The Odissey File where he states th e Clarke's 69th Law: "Reading computer manuals without the hardware is as frustrating as reading sex manuals without the software."