By the time we get Asimov style robots, how will we be able to define a human? Come to that,how will we be able to define a robot? After all,Lije Bailey wouldn't have known R Daneel Oliver was a robot without the prefix.(Caves Of Steel) Work is progressing on creating body parts in the lab.How long before a whole body? Brain computer interface already exists so why not computer body interface? A quantum computer would surely be a positronic brain.If you have an artificial brain that can learn and develop reason then would it be possible to 'hardwire' behaviour? Would it be ethical to terminate 'faulty' models? Andrew Martin and Data are but two examples of the conundrums the future will present.