Matt Killingsworth captured an audience's attention by relating to them and maintaining their focus through the use of pictures and humor. Killingsworth followed the third TED commandment by revealing his curiosity about when humans are most happy and formulated a strategy to find an answer, coming to a conclusion. He was passionate about his topic but could have benefited from more humor. Killingsworth's presentation focused clearly on supporting his theory with images and graphs, following presentation tips. To convey a great presentation, one must be passionate about their beliefs and engage the audience confidently while not fearing mistakes.