Robert E. Machol: System

“The lack of formal definition does not prevent us from noting the characteristics which are frequently present in large scale systems. Each such system has a certain integrity. It may or may not be rigidly controlled from some central point, but in every case, all the parts of the system have some common purpose; in some sense, they all contribute to the production of a single set of optimum outputs from the given set of inputs, with respect to some appropriate measure of effectiveness.”

Robert E. Machol

Source: System Engineering (1957), p. 5; As cited in: Allen B. Rosenstein (1965) " Systems engineering and Modern Engineering Design http://books.google.com/books?id=HDp9ReqM314C&pg=PA1#v=onepage&q&f=false"

Sense , Parting

“Every large-scale system is an information system. The automatic factory, the vehicular-traffic system, any military system- in the design of all these systems, primary attention should be given to the flow of information about the elements of the system.”

Robert E. Machol

Source: System Engineering (1957), p. 316

“Everyone knows what engineering is. All that's left is to define systems, and I'm not fool enough to do that.”

Robert E. Machol

Source: Mathematicians are useful (1971), p. 1: Machol explains his definition of systems engineering.

Fools

“There are four distinct bases on which a system-design book might be organized. First are the chronological phases through which the system-design effort passes, such as organization and preliminary design. Second are the logical steps such as analysis of the single thread (operation on a single input) and high traffic (methods of handling multiplex inputs). Third are the parts of the system, such as communications and displays. Fourth are the tools of system design, such as information theory and queueing theory.”

Robert E. Machol

Source: System Engineering (1957), p. 8

Books , Communication , Effort , Parting

“A new concept and a new method were needed. The concept from the engineering standpoint is the evolution of the engineering scientist, i. e., the scientific generalist who maintains a broad outlook. The method is that of the team approach. On large-scale-system problems, teams of scientists and engineers, generalists as well as specialists, exert their joint efforts to find a solution and physically realize it.
We are led to the concept of the system-design team, a small group of engineers or scientists, to lead a large project and organize the system effort. Such men have been variously called engineering scientists, system engineers, system analysts, or large-scale-system designers. The technique has been variously called the systems approach or the team development method. It is toward this man and his teammates that these discussions are directed. With the realization that not enough can be learned in all the required fields to make him a specialist, enough is introduced to make him aware of the language and problems of the specialist. This generalist is a new quantity in the engineering world, and his education must be begun.”

Robert E. Machol

Source: System Engineering (1957), p. 8

Men , World , Education , Problem

“At this time it is difficult to put one's finger on any single contribution in the decade 1950 - 1960 which is comparable to those above, and yet progress has probably been even greater. From the point of view of an educator, one cannot overlook the wide distribution which has been given to these ideas. There has been remarkable progress from analysis to synthesis, always a sign of maturity in a field of analytic endeavour. There has been consolidation, for example in the establishment of a more rigorous basis for information theory; there has been unification, for example in the demonstration of the formal similarity between game theory and linear programming; there has been application to mathematically more difficult situations, for example nonlinear servo systems and information channels with memory; there has been implementation, as in commercially available computers which by any reasonable measure are hun- dreds of times more powerful than the primitive devices of 1950; there has been de-limitation of the boundaries of many of these fields.”

Robert E. Machol

Source: Information and Decision Processes (1960), p. viii

Education , Game , Mathematics , Idea

“Most accidents in well-designed systems involve two or more events of low probability occurring in the worst possible combination.”

Robert E. Machol

Cited in: Richard K. Betts (1982) Surprise attack: lessons for defense planning. p. 158
Principles of Operations Research (1975)

“The purpose and real value of systems engineering is… to keep going around the loop; find inadequacies and make improvements.”

Robert E. Machol

Source: Mathematicians are useful (1971), p. 1

“[There is a] basic problem … of building a mathematical model of thought processes, and in particular of those aspects of thought which are concerned with information and decision processes. The perceptron is one type of model -- a set of memory devices connected in random fashion-- which has not yet achieved useful results but certainly seems to be a promising approach. The self-adaptive feedback control system which goes beyond the normal servo function of controlling its output, and in addition controls the parameters by which it controls its output is another which has already achieved pragmatic results in equipment control. It may be that the question of self-adaptation is a key to the whole question of how the human functions in a decisioning situation. For in many cases the ability of the human mind to adapt itself to a changing and complex environment is beyond our present aims in model construction.”

Robert E. Machol

p ix-x
Information and Decision Processes (1960)

Mathematics , Fashion , Question , Problem

“The ideal system engineer is an engineer thoroughly versed in his field but conversant with and knowledgeable of other fields. You have to have the capability and desire to become a 'six-month expert'… You've got to want to become a generalist, too.”

Robert E. Machol

Source: Mathematicians are useful (1971), p. 1

Knowledge

“[Systems should be classified] on the basis of the types of inputs with which they must cope.”

Robert E. Machol

Source: System Engineering (1957), p. 299; As cited in: Thomas C. Ford (2008) Interoperability Measurement. p. 146

“In April of 1959, ten of this country's leading scholars forgathered on the campus of Purdue University to discuss the nature of information and the nature of decision… What interests do these men have in common?… To answer these questions it is necessary to view the changing aspect of the scientific approach to epistemology, and the striking progress which has been wrought in the very recent past. The decade from 1940 to 1950 witnessed the operation of the first stored- program digital computer. The concept of information was quantified, and mathematical theories were developed for communication (Shannon) and decision (Wald). Known mathematical techniques were applied to new and important fields, as the techniques of complex- variable theory to the analysis of feedback systems and the techniques of matrix theory to the analysis of systems under multiple linear constraints. The word "cybernetics" was coined, and with it came the realization of the many analogies between control and communication in men and in automata. New terms like "operations research" and "system engineering" were introduced; despite their occasional use by charlatans, they have signified enormous progress in the solution of exceedingly complex problems, through the application of quantitative ness and objectivity.”

Robert E. Machol

Source: Information and Decision Processes (1960), p. vii

Men , Communication , Mathematics , Question

“[This set of inputs [can be defined] as 1) input which is always the same or is of many types, 2) input which occurs periodically (or very infrequently), and 3) input which does or does not seek to destroy the system. Their rationale for developing the classification was to aid in the definition of steps to be followed in order to find the] solution of the problem of a large-scale or complex system.”

Robert E. Machol

Source: System Engineering (1957), p. 302; As cited in: Thomas C. Ford (2008) Interoperability Measurement. p. 146

Problem