Is it possible to not be able to tell a VR experience from the real thing? Alexandra Grunberg of Outer Places writes about how 25% of the population is missing the paracingulate sulcus (PCS) — the part of the brain that helps to distinguish reality from imagination.
She writes, "According to some scientists, a lack of PCS coupled with a rise in virtual reality options could be more troublesome.... Situations could arise that are similar to the plot of Total Recall, where virtual reality experiences are confused with real-life memories. You could go to the VR movies and come out believing that you had a quirky romantic history full of flirty anonymous emails with Meg Ryan."