Applying Common Sense in Analyzing Scientific Claims
The claim: Japanese students from Osaka Public University engineered and piloted an innovative ‘flying cycle’ aircraft in 2019. Named Tsurugi, the pedal-powered plane achieved a notable flight distance of 19 km (11 mi) during the Yomiuri Television Birdman Rally.
Hmmmm. Elite athletes put out about one-half horsepower over extended periods of time and the smallest ultralight plans have engines with 15 horsepower. Does this seem plausible?