wheel by linkage to the visual principle of mobile lineality, the 
wheel acquired a new degree of intensity. The bicycle lifted the 
wheel onto the plane of aerodynamic balance, and not too 
indirectly created the airplane. It was no accident that the 
Wright brothers were bicycle mechanics, or that early airplanes 
seemed in some ways like bicycles. The transformations of 
technology have the character of organic evolution because all 
technologies are extensions of our physical being. Samuel 
Butler raised great admiration in Bernard Shaw by his insight 
that the evolutionary process had been fantastically 
accelerated by transference to the machine mode. Shaw, 
however, was happy to leave the matter in this delightfully 
opaque state. Butler, himself, had at least indicated that 
machines were given vicarious powers of reproduction by their 
subsequent impact upon the very bodies that had brought 
them into being by extension. Response to the increased power