Bill Gate's butler was giving Bill's old friend a tour of Bill's house.
The friend couldn't help but notice that everything in the house was digital. They didn't even have a physical TV.
Everything was a hologram. Heck it felt like the house itself was digital.
Further away into the tour the old friend couldn't help but notice a piece of paper with some ink on it that looked quite real.He went ahead and touched it.
It was real paper with ink on it. Surprised, the old friend asks the butler why of all things in the house only the was real.
The butler replies,"This is where he draws the line."