Did you know you can use your camera with Adobe Lightroom to shoot photos and display them directly on your computer screen? It's called shooting in tethered mode.
Sometimes we don't want others to know about our newest relationship gains or losses. This is the way your friends and other Facebook users won't even notice it when you change it.
Speculating about future is is most of the time futile, let alone about the distant 100,000 years kind of future. But we can always guess and if there is science involved we even might be onto something.