While analysing the footage, I noticed a very interesting nonverbal signal from Charlie. As she was being introduced to the audience, and in response to the host's remarks, Charlie did an eyelid flutter. While this may sound trivial, observing an eyelid flutter can be very telling, as to how somebody is feeling about a topic. For people in business, especially those of you that lead, pitch or negotiate, the ability to read such nonverbal cues, can elevate your success to the next level. Cues like this are involuntary and indicate some kind of concern in response to a stimulus, in this case, the host's words. The nonverbal response, immediately follows the stimulus. Reading these cues gives the observer the ability to detect an issue and, more importantly, respond appropriately by working to resolve the issue.