Placebo Effect
Caution. This article/definition is in draft form and at this time may constitute no more than rough notes, reminders for required content, or absolutely nothing at all. Content is subject to revision.
Been known for centuries. First proof "The wooden pointers were just as useful as the expensive metal ones, showing "to a degree which has never been suspected, what powerful influence upon diseases is produced by mere imagination".[10] While the word placebo had been used since 1772, this is the first real demonstration of the placebo effect." https://en.wikipedia.org/wiki/Placebo_in_history
The placebo effect was first defined in modern times 1920 by T.C. Graves in an article published in the prestigious The Lancet. {Graves, 1920 #1347}. https://en.wikipedia.org/wiki/Placebo_in_history
Notes
Demonstrates, unequivocally, the impact of Consciousness/consciousness on physical matter.