The title of this video by Joe Pease comes from an essay called "Shades of a Shadow" which contains paragraphs such as: "It is not uncommon for children to play with their shadows or to imagine that they are tangible. However, in order to grow up, children must leave behind this fantasy...no one ever fully grows up. Instead, growing up is a process that continues throughout life."
Of course, it might just be a bunch of shadows.
Music by Nick Cave and Warren Ellis.