Global discovery program New York City 2017 Blue-sky thinking is the thinking that is not grounded or in touch in the realities of the present. Your ideas may take you to every corner of the world without the limitations in reality, which brings people imagination. The video recorded the sky change in a day. The clouds change every second in sky, which represents various and changing ideas in the world. And the ideas can be exchanged and delivered to the whole world just like the cloud in sky.