Mesmer was the first to propose a rational basis for the effects of hypnosis.
On the other hand, it’s only in the last few decades that we’ve come to realise that!
Hypnosis itself hasn’t changed for millennia, but our understanding of it and our ability to control it has changed quite profoundly.
From a Western point of view, the decisive moment in the history of hypnosis occurred in the 18th Century (coinciding with the Enlightenment and the Age of Reason).
The work of Franz Mesmer, amongst others, can be seen as both the last flourish of “occult” hypnosis and the first flourish of the “scientific” viewpoint.
Those who believe that hypnosis can be used to perform miracles or control minds are, of course, simply sharing the consensus view that prevailed for centuries.
Recorded history is full of tantalising glimpses of rituals and practices that look very much like hypnosis from a modern perspective, from the “healing passes” of the Hindu Vedas to magical texts from ancient Egypt.
On the one hand, a history of hypnosis is a bit like a history of breathing.
Like breathing, hypnosis is an inherent and universal trait, shared and experienced by all human beings since the dawn of time.
Mesmer was also the first to develop a consistent method for hypnosis, which was passed on to and developed by his followers. Mesmer himself, for instance, liked to perform mass inductions by having his patients linked together by a rope, along which his “animal magnetism” could pass.