Since I have spent much of my life lecturing, with a small amount of preaching, I have a theory which is somewhat based on sigma; I can’t prove it, but I have experienced it with myself when I am listening, and with my audience when I am speaking.
If you hear something once as a focused listener, about one sigma (68%) of the information will be retained, but if you hear it twice, it jumps to two sigma, about 95%. By the same token, if you say something once to a focused audience, about 2/3 of the audience will remember it, but if you say it twice, about 95% will, and if you can say it three times without boring the audience, you’ll have three sigma, or 99%, remembering what you have said.
And one more thing. The MSM knows this as well, whether directly or intuitively. If a piece of news—whether true or fake is irrelevant—is spoken once, for at least a third of the listeners it will go in one ear and out the other, but if you hear it, and then hear it again from another source, and then hear it again from a third source, it’s in your brain, and the only way it can be gotten out of your brain is for other sources to disprove the information at least as many times as it was heard. Only Trump among the GOP bigw(h)igs understands this, with the possible exception of Cruz, though in his present position that is irrelevant.
My Career Navy father, always had a proverb,an idiom, a saw...
For this I think he may have used, ‘only believe half of what you see, and none of what you hear’.
That was in the time of radio/some TV and papers.
With the internet?
‘All early reports are error prone’???
I may have to dig out a copy of “The Hidden Persuaders”.
“Hi, I’m Mike Lindell, and just like you, I had trouble sleeping at night...”