I hate this fucking show. The fact that it's run by the same dude who made House is mindboggling.
I remember there was a guy (maybe on youtube?) who always claimed he had pretended to have a hud for so long (it helped him overcome social anxiety and get out of the house, I think) that it was always in his mental imagery of things, and he said it was present in his actual vision. This was way back when though, before social media got big... maybe 2008-2010? I've always wondered if, like the people with their tulpas and such causing mental illness type symptoms, IF we could really change our perceptions that much.