What specific linguistic change in the English translation profoundly shifted the interpretation of Schiaparelli's findings?

Answer

The rendering of *canali* as "canals"

The translation of *canali* to the English word "canals" was the crucial step, as 'canal' universally suggests an artificial, engineered waterway built by intelligent beings, transforming the perception of the features.

What specific linguistic change in the English translation profoundly shifted the interpretation of Schiaparelli's findings?
HistoryMarsAstronomerobservationCanal