Engineering as a profession and what engineers do

Engineering is a profession in which the natural sciences and mathematics learnt before is used for the profit of humanity. It is one of the basic professions like profession of a doctor, teacher, etc. This profession is necessary for humanity because when people's needs change and some problems occur engineers step in and they try to provide new devices and they try to solve the problems with their acknowledge. Engineers invents useful tools and objects, they design a new system or develop an old system and they try to use supplies efficiently for savings. Engineers are needed in every place in our life and they will needed in the future. The name of engineers might be change, but the need for them cannot be change.