Another challenge to machines' ability to sort data - this time multimedia - is introduced by HP's research intoalways-on cameras that capture "life's fleeting moments." The description sounds out of Vanilla Sky: "Spontaneous, unguarded, fleeting -- they're often the moments in our lives we most want to photograph. But these moments are also those we frequently miss -- gone before we could reach for a camera. But what if we could easily capture such priceless moments? What wouldn't most of us give to have picture albums full of them?"