I. Any given program, when running, is obsolete. II. Any given program costs more and takes longer. III. If a program is useful, it will have to be changed. IV. If a program is useless, it will have to be documented. V. Any program will expand to fill available memory. VI. The value of a program is proportional to the weight of its output. VII. Program complexity grows until it exceeds the capabilities of the programmer who must maintain it. VIII. Any non-trivial program contains [...]