The problem of the acquisition of energy is replaced by the problem of its dissipation, as J. The optimum population is, then, less than the maximum.The difficulty of defining the optimum is enormous; so far as I know, no one has seriously tackled this problem.How it is conventionally conceived needs some comment.It is fair to say that most people who anguish over the population problem are trying to find a way to avoid the evils of overpopulation without relinquishing any of the privileges they now enjoy.Put another way, there is no "technical solution" to the problem.I can win only by giving a radical meaning to the word "win." I can hit my opponent over the head; or I can falsify the records.
However, given an infinite source of energy, population growth still produces an inescapable problem.  The arithmetic signs in the analysis are, as it were, reversed; but Bentham's goal is unobtainable.
A technical solution may be defined as one that requires a change only in the techniques of the natural sciences, demanding little or nothing in the way of change in human values or ideas of morality.
In our day (though not in earlier times) technical solutions are always welcome.
Because of previous failures in prophecy, it takes courage to assert that a desired technical solution is not possible.
Wiesner and York exhibited this courage; publishing in a science journal, they insisted that the solution to the problem was not to be found in the natural sciences.