"All you need is love. But a little chocolate now and then doesn't hurt."
Charles M. Schulz
Chocolate MilkThere's a phrase we use in the audio industry to explain to someone that doesn't understand that when something's been mixed down, like a song, it can't be unmixed. In other words, once all the elements have been married together, we can't easily pluck out the vocals and replace them. The phrase goes something like, "Here's a glass of milk, and here's chocolate powder. Mix the chocolate into the milk and you have chocolate milk. You can't take the chocolate out and just have milk."
Well, we are all eating a big ol' crow sandwich with chocolate sprinkles on top right about now.
"Shh! Listen! Someone's coming! I think -- I think it might be us!"
J. K. ROWLING, Harry Potter and the Prisoner of Azkaban
Imagine if we could time travel without changing history. If we could go back 50 or 100 years would people view our technology as magic? If we were visited by time travelers from the future, would their technology be magic to us?