Henry Howard Harper, The psychology of speculation (1926)
“ And thousands daily are influenced by the stock ticker to commit the most fatuous blunders.As a camera fails to record a true picture if placed in too close juxtaposition to the object, so in studying the ticker-tape one is restricted to a close-up view of conditions, resulting in a distorted gauge of values; for the figures recorded often mislead and confuse the attentive observer; in fact it frequently happens that the price fluctuations result from a wave of hysteria among a coterie of traders, and bear but little analogy to the true value of the stocks. ”
