Hypnosis is defined as an altered state of consciousness, but what if it simply is consciousness. You are hypnosis.
It is a radical thought, but when you consider that you function by reaction to senses you experience on a day to day basis, so smells; tastes; sounds; feelings as well as things you see affect you. Take for instance the jingle played on the radio from McDonalds or CocaCola. If you have experienced these products in the past, you will make images in your head and even salivate with desire to taste them. This is all learnt response and it is hypnosis.
Since the responses to these senses and emotions are automatic, it dispels the idea that people cannot be hypnotised, because in order to live you have to experience.