Tom, W8JI wrote:
"The shorter element doesn`t direct. It reradiates energy."

On page 905 of Terman`s 1955 edition he writes:
"If resonant at a higher frequency than is being transmitted, the
parasitic antenna acts as a "director" and tends to concentrate the
radiated field in its direction."

"Director" in quotation marks means: that is what they are called. Pity
the fool who argues with Terman!

Best regards, Richard Harrison, KB5WZI