Testing informs the next iterations of prototypes. Sometimes this means going back to the drawing board or prototyping phase in order to learn more about your user. Testing is another opportunity to build empathy through observation and engagement—it often yields unexpected insights. Sometimes testing reveals that not only did you not get the solution right, but also that you failed to frame the problem correctly
Testing means that you put your prototype in the user’s hands – or your user within an experience. The tester has to interpret the prototype. It is important to watch how the users use (and misuse!) what you have given them, and how they handle and interact with it; then listen to what they say about it, and the questions they have.
Here are some sample questions, that help you to understand the user`s experience: Ask questions such as “What do you mean when you say ___?”, “How did that make you feel?”, “What did you expect would happen?” and, most importantly, “Why?”.