They sound similar, but a critique and a critic are different beasts. The purpose of a critique in this lab is to provide feedback to a team to help them improve their presentations. It's a technique used extensively by artists to help each other improve. In my experience, science and technology students have some difficulty in accepting suggestions. They often want to answer back and justify themselves. Please try to avoid this. When others are commenting on your work, just listen and make notes. Do not make any effort to "defend" yourself. Just listen, and learn.