examples of how a brick could overcome gravity
of which prime examples must also include Slingsby T42 Eagle - aka the mahogany bomber - and the Grunau Baby (with original german beer advert on upper wing surface which, luckily, no-one ever viewed from the ground)
PZL W-3 Sokol, anyone?
hop around the World as we wish with much less discomfort than our forebears
.
Nowadays the discomfort has been transferred from the air to the airports.
GG