What is Computer Ethics?*

James H. Moor

The Revolutionary Machine

What is special about computers? It is often said that a Computer Revolution is taking place, but what is it about computers that makes them revolutionary? One difficulty in assessing the revolutionary nature of computers is that the word “revolutionary” has been devalued. Even minor technological improvements are heralded as revolutionary. A manufacturer of a new dripless pouring spout may well promote it as revolutionary. If minor technological improvements are revolutionary, then undoubtedly ever-changing computer technology is revolutionary. The interesting issue, of course, is whether there is some nontrivial sense in which computers are revolutionary. What makes computer technology importantly different from other technology? Is there any real basis for comparing the Computer Revolution with the Industrial Revolution?

If we look around for features that make computers revolutionary, several features suggest themselves. For example, in our society computers are affordable and abundant. It is not much of an exaggeration to say that currently in our society every major business, factory, school, bank, and hospital is rushing to utilize computer technology. Millions of personal computers are being sold for home use. Moreover, computers are integral parts of products which don’t look much like computers such as watches and automobiles. Computers are abundant and inexpensive, but so are pencils. Mere abundance and affordability don’t seem sufficient to justify any claim to technological revolution.

One might claim the newness of computers makes them revolutionary. Such a thesis requires qualification. Electronic digital computers have been around for forty years. In fact, if the abacus counts as a computer, then computer technology is among the oldest technologies. A better way to state this claim is that recent engineering advances in computers make them revolutionary. Obviously, computers have been immensely improved over the last forty years. Along with dramatic increases in computer speed and memory there have been dramatic decreases in computer size. Computer manufacturers are quick to point out that desk top computers today exceed the engineering specifications of computers which filled rooms only a few decades ago. There has been also a determined effort by companies to make computer hardware and computer software easier to use. Computers may not be completely user friendly but at least they are much less unfriendly. However, as important as these features are, they don’t seem to get to the heart of the Computer Revolution. Small, fast, powerful and easy-to-use electric can openers are great improvements over earlier can openers, but they aren’t in the relevant sense revolutionary.

Of course, it is important that computers are abundant, less expensive, smaller, faster, and more powerful and friendly. But, these features serve as enabling conditions for the spread of the Computer Revolution. The essence of the Computer Revolution is found in the nature of a computer itself. What is revolutionary about computers is logical malleability. Computers are logically malleable in that they can be shaped and molded to do any activity that can be characterized in terms of inputs, outputs, and connecting logical operations. Logical operations are the precisely defined steps which take a computer from one state to the next. The logic of computers can be massaged and shaped in endless ways through changes in hardware and software. Just as the power of a steam engine was a raw resource of the Industrial Revolution so the logic of a computer is a raw resource of the Computer Revolution. Because logic applies everywhere, the potential applications of computer technology appear limitless. The computer is the nearest thing we have to a universal tool. Indeed, the limits of computers are largely the limits of our own creativity. The driving question of the Computer Revolution is “How can we mold the logic of computers to better serve our purposes?”

I think logical malleability explains the already widespread application of computers and hints at the enormous impact computers are destined to have. Understanding the logical malleability of computers is essential to understanding the power of the developing technological revolution. Understanding logical malleability is also important in setting policies for the use of computers. Other ways of conceiving computers serve less well as a basis for formulating and justifying policies for action.

Consider an alternative and popular conception of computers in which computers are understood as number crunchers, i.e., essentially as numerical devices. On this conception computers are nothing but big calculators. It might be maintained on this view that mathematical and scientific applications should take precedence over non-numerical applications such as word processing. My position, on the contrary, is that computers are logically malleable. The arithmetic interpretation is certainly a correct one, but it is only one among many interpretations. Logical malleability has both a syntactic and a semantic dimension. Syntactically, the logic of computers is malleable in terms of the number and variety of possible states and operations. Semantically, the logic of computers is malleable in that the states of the computer can be taken to represent anything. Computers manipulate symbols but they don’t care what the symbols represent. Thus, there is no ontological basis for giving preference to numerical applications over non-numerical applications.

The fact that computers can be described in mathematical language, even at a very low level, doesn’t make them essentially numerical. For example, machine language is conveniently and traditionally expressed in 0’s and l’s. But the 0’s and l’s simply designate different physical states. We could label these states as “on” and “off” or “yin” and “yang” and apply binary logic. Obviously, at some levels it is useful to use mathematical notation to describe computer operations, and it is reasonable to use it. The mistake is to reify the mathematical notation as the essence of a computer and then use this conception to make judgments about the appropriate use of computers.

In general, our conceptions of computer technology will affect our policies for using it. I believe the importance of properly conceiving the nature and impact of computer technology will increase as the Computer Revolution unfolds.

Go to: Anatomy of the Computer Revolution

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