> 2023: Full-immersion virtual realities .... We’ll be able to send little devices, nanobots, into the brain and capillaries, and they’ll provide additional sen

> 2023: Full-immersion virtual realities .... We’ll be able to send little devices, nanobots, into the brain and capillaries, and they’ll provide additional sensory signals, as if they were coming from your real senses. Great, a new source for PTSD.