With modern materials, motors, etc., humans have apparently achieved flight like birds, flappy wings and all.
I wonder often about path-dependency and determination, particularly when it comes to inventions and innovations. For example, if there had been more advanced fabrics and miniaturized motors in the early 1900s, would we have seen flappy flight before fixed wing flight? Or did we need fixed-wing flight to get miniaturized motors? It would seem impossible to imagine a world with flight, but without fixed-wing flight. Yet, is it really so implausible? Certainly experimenters at the time liked the idea. With different materials, who knows what they could have done?
When the term “thinking outside the box” is bandied about, I always wonder who among the human race will actually go out and do the crazy thing that everyone thinks is stupid. Apparently this guy. Also these dudes. Flying looks fantastic: