previous HISTORY of aeronautical developments did not accomplish what the wrights did accomplish.
it was the WRIGHTS who figured out how to control a plane and it is still the accepted way of controlling planes today.
when the wrights flew in france, the french admitted they were the masters of the air by the way they could control their plane.
Making drawings, thinking out loud, writing ideas DID NOT INVENT THE PLANE. The wrights even proved that lillienthal's calculations were wrong.
The Wrights got it Right, everyone else is an also ran.