There was a time, in my lifetime, when you needed to own a video camera, a camera, a phone, a desktop computer, a walkman (aww, I miss my walkman!), a watch, and a pager. Carrying it all around would have given you quite a crick in the neck.
How weird is it to think that now, that tiny device in the bottom photo, contains all of the capabilities of those devices, rolled into a handy pocket-sized rectangle? We really have come on a long way.