INVENTIVE MINDS
'(<a href="http://www.j-archive.com/media/2009-01-07_J_19.jpg" target="_blank">Sarah of the clue clue presents from a bicycle garage.</a>)  This artist and inventor is credited with developing the <a href="http://www.j-archive.com/media/2009-01-07_J_19a.jpg" target="_blank">idea</a> of the chain & cog in the 15th century; it took another 400 years for that idea to be applied to bike design'
(Leonardo) Da Vinci