Yes indeed. They would be amazing insights wouldn't they?

OMG, I actually dreamed about making a time viewing device, where you can look through the eyes of people, even in photos, to see people's past. Then while viewing through their past, through their eyes, you can connect through the eyes of people there, to keep going back, and back, through history.

I thing Google, Apple and Facebook already have this covered, there's a few tweaks coming in the next raft of updates to complete the grand vision...