" Scratching off a postcard to Charlie Taylor, Orville expressed the same spirit in a lighter vein. Flying machine market has been very unsteady the past two days. Opened yesterday morning at about 208 (100% means even chance of success) but by noon had dropped to 110. These fluctuations would have produced a panic, I think, in Wall Street, but in this quiet place it only put us to thinking and figuring a little. "
― David McCullough , The Wright Brothers