Digital technology is developed to the point where the virtual and the real have merged. Psychiatrists have employed virtual bridges and ladders to assist patients in overcoming their fear of heights; military units make use of computers to effectively perform simulated combat training exercises.
數位科技發達，「螢幕即真實」，醫學上已利用走虛擬橋、搭乘虛擬電梯的方式，成功治癒了懼高症；軍事單位更用改編自電腦遊戲的虛擬戰爭，有效地進行訓練和演習。