You know what they say about a "new mouse trap"...that there is always a new wrinkle, and a new way to make an improvement.    

When we discuss Daedalus had Icarus our discussion always assumes that their flight was mythical – just allegorical - but I believe it might have been actual flight.   How do we know what genius and clever design and ingenious materials might have existed 2000 years ago?    

Today’s strong and lightweight rip-stop nylon – perfect for huge parasails – makes flight a reality for hang gliders and even for solar or pedal powered ultra lights – and makes crossing water as fast as it would be behind a ski nautique….

Never think of design or machine as mature or finished.    Even the wheel will see improvement.