Steve Robertson wrote:

There aren't any airplanes that flap their wings, either.

You've never heard of the ornithopter, then:

http://www.ornithopter.net/index_e.html

As soon as it's certified (well, as soon as it actually works), I'm
confident that all of the posters who made the
still-funny-after-all-these-years comment about birds not having wings on
the bottom will sell their current planes and buy one.


All the best,


David