older theories become more and more unclear when one tries to use them to obtain insight into new domains. - David Bohm

Difference exist because thought develops like a stream that happens to go one way here and another way there. Once it develops it produces real physical results that people are looking at, but they don't see where these results are coming from — that's one of the basic features of fragmentation. When they have produced these divisions they see that real things have happened, so they'll start with these real things as if they just suddenly got there by themselves, or evolved in nature by themselves.

Si concibe la totalidad compuesta por fragmentos independientes, así es como su mente tenderá a funcionar, pero si puede incluirlo en un todo de una manera coherente y armoniosa en una totalidad general que sea indivisa, ininterrumpida y sin fronteras, su mente tenderá a moverse de una manera semejante, y de ahí fluirá una acción ordenada dentro del todo.

the idea that mathematics expresses the essential reality of nature was first put explicitly, in modern times, by scientists, such as Sir James Jeans and Werner Heisenberg, but within a few decades, these ideas were being transmitted almost subliminally. As a result, after passing through graduate school, most physicists have come to regard this attitude toward mathematics as being perfectly natural. However, in earlier generations such views would have been regarded as strange and perhaps even a little crazy — at all events irrelevant to a proper scientific view of reality.