I was watching a Hollywood movie few days ago. In one scene the son says "See, Mama: it's Dad," using it for a human. Is that right? How?
In another case, when one of my colleague was explaining some scenarios, he started explaining in this way:
The user will click on a website link, then he/she should see a pop-up "Sign up now", then he/she should fill the form ...
Why can't we use the word it instead of he/she? We don't know who the user is to be, male or female. If we cant use it in place of he/she, which word should we use?