Some experts believe that robots will be able to do jobs,which at the moment only human beings can do;however,there are also others who disagree.One London company,UAS has already developed machines that can be employed as 'home helps'for old people unable to look after themselves and who are living on their own.These machines can now carry out such things as cook eggs and clean the floor,and the company says that future models will be directed by simply video instructions and controlled by a 'brain '. Yet it is believed that we have a long way to go before we can develop truly intelligent machines.