Approach your problem from the right end It isn't that they can't see
the solution. and begin with the answers. It is that they can't see the
problem. Then one day, perhaps you will find the final question. G. K.
Chesterton. The Scandal of Father Brown The point of a Pin. The Hermit
Clad in Crane Feathers in R. van Gulik's The Chinese Maze Murders.
Growing specialization and diversification have brought a host of mono-
graphs and textbooks on increasingly specialized topics. However, the
"tree" of knowledge of mathematics and related fields does not grow only
by putting forth new branches. It also happens, quite often in fact,
that branches which were thought to be completely disparate are suddenly
seen to be related. Further, the kind and level of sophistication of
mathematics applied in various sciences has changed drastically in
recent years: measure theory is used (non-trivially) in regional and
theoretical economics; algebraic geometry interacts with physics; the
Minkowsky lemma, coding theory and the structure of water meet one
another in packing and covering theory; quantum fields, crystal defects
and mathematical programming profit from homotopy theory; Lie algebras
are relevant to filtering; and prediction and electrical engineering can
use Stein spaces. And in addi- tion to this there are such new emerging
subdisciplines as "experimental mathematical", "CFD", "completely
integrable systems", "chaos, synergetics and large-scale order", which
are almost impossible to fit into the existing classification schemes.