Kevin Levine explains the genesis of Sky-Lines in BioShock Infinite's floating city, Columbia, and how the children were the ones to initially figure out how to get around using those Sky-Hooks. Man, those must have been some brave children!
BioShock Infinite is a first-person shooter set in 1912 where players assume the role of former Pinkerton agent Booker DeWitt, sent to the flying city of Columbia on a rescue mission. His target? Elizabeth, imprisoned since childhood. During their daring escape, Booker and Elizabeth form a powerful bond -- one which lets Booker augment his own abilities with her world-altering control over the environment. Together, they fight from high-speed Sky-Lines, in the streets and houses of Columbia, on giant Zeppelins and in the clouds, all while learning to harness an expanding arsenal of weapons and abilities.