Human brains are funny things when it comes to time. We spend a lot of our mental energy thinking about the future -- where to vacation, what to eat, when to quit and who to marry -- but what really fires our synapses is a little taste of the past. The future may be awesome and mysterious, but we can't remember things that haven't happened yet; memory is just as powerful as imagination, and more emotionally charged.
Whole industries have grown up around our innate desire to remember more, longer and with higher fidelity than we could in the absence of a technological assist
