As far as hypnosis is concerned, I had a very serious problem when I was in my twenties. I encountered a man who later became the president of the American Society of Medical Hypnosis. He couldn't hypnotize me.
Create a world in which these things do or do not exist, or in which they are extended in some way. Test reality against this fiction. The reader will recognize the world that you're talking about, even though it may be another one altogether.
I feel angry that I can't be hypnotized. I'm not putting it down, and I'm not saying that it doesn't exist. I have talked to a great many people who are very good at it, but so far nobody has ever been able to hypnotize me.
I sent The World Well Lost to one editor who rejected it on sight, and then wrote a letter to every other editor in the field warning them against the story, and urging them to reject it on sight without reading it.