ABSTRACT
The role of methods in science and industry is very important. Russian scientist M.S. Tswett, who discovered the chromatography method, wrote [1,2]: "A prerequisite for any fruitful research is the possession of an adequate method." Someone even said, "Any advance in science is an advance in methods." Unfortunately, method is often the weakest link in scientific research. "Each generation, in its major bulk of studentship, inherits the techniques of the preceding one and without subjecting them to criticism, ... that they are universally admitted, apply them for obtaining new results, which get the right of citizenship with the contemporaries and often lose any significance later on."
