Abstract
AbstractFisher advocates that all variables should be made global to programs and subprograms in order to increase the maintainability and to reduce the problems with subprogram linkages, among other things. The fallacies of Fisher's arguments are shown and the advantages and necessity of using local variables are discussed. It is argued that, from a practical point of view, the use of local variables improves the comprehensibility and the time and space efficiency of programs, as well as makes correctness proofs easier and recursion possible.
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