I just thought of something the other day having another one of my random Star Wars thoughts. Through the films, the digital hologram is used as a key plot device to deliver information and move our characters from one place to another. When a hologram pops up, you can bet some action awaits in the next sequence. Then when you look at the force ghost sequences with Obi Wan in the OT, they kinda serve the same function. To deliver information and move our hero to the next stage. This theory doesn't really apply to the Sith so much, but the hologram device works this way in scenes with them also. Could Lucas, in a sublime way, be telling us that technology & spiritually can function equally the same way?