Gavari Violin Fast Forwards Instrument Design By 300 Years

Check out almost any classical violinist, and you might notice that the instruments they use are based on designs first created over 300 years ago. World class players are even willing to pay millions to own an original instrument from the great 17th century Italian masters like Antonio Stradivari. If you wanted to cross an ocean at great speed you wouldn't go looking for a 17th century ship, so why do we still use 300 year old ?