The Origin of Extension Work—A Timeline
1902

Seaman Knapp created the demonstration farm model. These farms were designed to show how to increase yields of the standard crops. It was through this work that Knapp learned the power of agriculture demonstration. His philosophy is best described in one of his most often quoted sayings,

"What a man hears, he may doubt. What he sees, he may possibly doubt. But what a man does himself, he cannot doubt." [Bliss 1952, p. 240]