Question

machines are good slaves but a bad master

Answer 1

machine are very helpful, very good, very fast. it make us lazy. because when machine are there human have no need work.

Answer 2

Machines are the most importance inventions of science given to mankind . They are very useful, and help us in many ways but now a days different types of machines are invented for different uses of human being. We human only depend on machines for our purpose. And because of this machines only human beings are totally depend on them and are becoming lazy now a days. So we have gifted this title to machines that " Machines are good slaves but a bad master" 

Hope it will help you. :)