Genlocking would keep multiple cameras firing at the same time however timecode is used to sync audio and video. During long cable runs, combining a audio mixer, and cameras, there is a frame or two delay. Timecode allows you to then sync the audio with the video so the cable delays are no longer an issue.
Narcissism is the pursuit of gratification from vanity or egotistic admiration of one's own attributes. The term originated from Greek mythology, where the young Narcissus fell in love with his own image reflected in a pool of water.
Narcissism is also considered a social or cultural problem. It is a factor in trait theory used in various self-report inventories of personality such as the Millon Clinical Multiaxial Inventory. It is one of the three dark triadic personality traits (the others being psychopathy and Machiavellianism).