Factors Affecting the Cost of Airplanes

evidence

Establishes that unit production cost falls by a roughly constant proportion with each doubling of cumulative output — the relationship later called Wright's law and applied to energy technologies. V55 verification basis: neither WebSearch nor WebFetch was available in this session; the citation and its content are stated from author knowledge of the paper as it is cited throughout the technology-learning literature, and the page range is deliberately omitted because it could not be confirmed.

A evidence is not a place. Drawing it on a map would assert something about the world that no stored fact supports.