It can help by  when projects are given.It can also help homework given by your teachers at school.It can help in college.it can help in presentations when the boss of your job tells you to explain something at work.

It can help in the real world by: When you have an office job. When you have something that you dont understand and you have computer.You can ask you teacher through email.Also in projects the same.In college when proffesr is talking.