I think that informatics is the study of computer with the human interaction. There is not a set definition as to what truly stands for because it involves many different aspects of the computer field. Informatics deals with the relationship between the users and the creators. What does that mean? Well, if you own a dental company and the dentist says he wants a certain application to be on the On-line Registration Form, then with the knowledge of informatics, you will be able to see if it is possible or not. With the knowledge of informatics you will be able to go to the programmers and tell them what they need to do. Since you know whats possible and not, then the programmer cannot tell you something that isn't true. For instance, if the programmer says that its going to take a month to build the website, then you will know that isn't true giving you the option to negotiate it.
When the knowledge of informatics, not only will you be able to work with society in a business approach, but you will also have an understanding as to what is possible and not because you will have experience in the field. Informatics uses its resources to make everyday technology better like the medical field, biology, sports, and many other field that are growing everyday. Informatics is what combines the human interaction with the virtual reaction. This is a very essential part of the computer field because society wants things to be easy and wants it done here-and-now but a lot of times, it just isn't possible. You can say something along the lines that it can be done a certain way now, then as technology grows we can incorporate what you want at the moment.