"Where facts are few, experts are many” means that, when a problem is not well defined with facts, seemingly everyone is an expert. “When facts are few, experts are many” has been cited in print since at least May 1996. In 1997, the saying was credited to Donald R. Gannon.
It’s not certain who this person is, or when he first said it. There is a Dr. Donald R. Gannon, a psychologist at the South Dakota State Human Services Center.
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Subject: Productivity Improvement Center PIC
...when facts are few, experts are many....
How to Create Profitable New Products:
From Mission to Market
By George Gruenwald
Lincolnwood, IL: NTC Business Books
“Where facts are few, experts are many.” — DONALD R. GANNON
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---- “Where facts are few, experts are many.” - Donald R Gannon ----
Google News Archive
7 November 2006, Record-Journal (Meriden, CT), pg. 13, col. 5:
Someone once said, “Where facts are few, experts are many.”
(Letter by Jerry Harrington, Wallingford—ed.)
The 2,548 Wittiest Things Anybody Ever Said
Edited by Robert Byrne
New York, NY: Touchstone (Simon & Schuster)
Where facts are few, experts are many. —Donald R. Gannon