been found no longer possible to use the old model of 
     supposing that what was being done was to divide up 
     something called matter into a series of bits, each with 
     definite properties called size, weight, or position. 
     Physicists do not now say that matter ‘is made’ of bodies 
     called atoms, protons, electrons, and so on. What they 
     have done is to give up the materialist method of 
     describing their observations in terms of something made 
     as by a human process of manufacture, like a cake. The 
     word atom or electron is not used as the name of a piece. 
     It is used as part of the description of the observations of 
     physicists. It has no meaning except as used by people 
     who know the experiments by which it is revealed.

And, he adds, “it is important to realize that great changes in 
ways of ordinary  human speaking and acting are bound up with