genius and craziness

Isn't it interesting to consider the fine line between genius and craziness? Or at least between genius and eccentricity?

I came across the below video which is an encounter between classical guitar player, John Williams and builder, Greg Smallman. Clearly Smallman is a genius and maybe a bt eccentric... He has come up with a revolutionary design for the classical guitar. From about 4:05- 5:00, we see the radical changes in the construction of the guitar's top in a Smallman guitar. Many players prefer the sound of the old style of construction, but his designs have clearly changed that way guitars are heard and built and many top builders emulate his style of construction. That said, take a look at the shop (beginning about 3:25). It certainly doesn't have the clean design, perfect tools, and careful arrangement I expect from a world class guitar builder's shop. But the proof is in the product isn't it?

at about 5:00, Williams begins to seriously play the instrument.