Facebook creator Mark Zuckerberg is only 21 years old in this footage of him explaining how he designed the social media website within the span of a few days. He explains how the technological innovations created since the dot com boom made the creation of Facebook possible without the need for investors. The social media site was officially founded on February 4, 2004 and went public on May 18, 2012 with one of the highest initial public offerings in internet history.