Well, that is exactly what Joseph Montgolfier did, and it led to him, with his brother, Étienne Montgolfier, coming up with the first air balloon, which in turn led to the first untethered manned hot-air balloon flight by Jean-François Pilâtre de Rozier and François Laurent d’Arlandes on November 21, 1783, in Paris, France, in a balloon created by the Montgolfier brothers.
The whole history of flight started one evening in 1782. Joseph Montgolfier was sitting in front of his fire speculating as to what caused the embers to rise from the fire. He couldn’t decide if the smoke itself made them rise. So, he decided to do what seemed to him obvious, he filled a small box with some crumpled paper and light it! He got his answer, because, when lit, the box rose all the way to the ceiling.
This led him to ….