R. W. Bemer comments on Mr. Pyle's proposal for a nonspace character to precede two characters in a single print position. He argues against this proposal because it would cause errors when reading or storing data in reverse order. He suggests that the backspace character, which is between the two characters, is more suitable as it is reversible like the space convention. He also notes that strings of graphic characters may not imply movement, such as in line or page printers, and that the movement convention is only implied for character printers. K. Wright comments on Bellman's method for unstable linear systems. He points out that the method has a simpler derivation and highlights its limitations. He explains that equation (12) can be derived using a change of variable, and that a condition u = α ≠ 0 would not provide a condition on R. He also discusses the solution of equation (11) and the stability characteristics of the equation. He notes that the transformed equation can run into difficulties if v = 0, and suggests a substitution to resolve this. He also criticizes the authors' conclusion that they replaced an unstable boundary value problem with a stable initial value problem, suggesting that a direct matrix method might be more effective. W. I. Givens, as a "subprofessional," lists three major objections to Dr. Orden's article. He argues that Dr. Orden describes the Information Processing profession, not the Computer Programming profession. He also states that programmology, mathemology, and systemology are inadequately defined. Finally, he criticizes the requirement of "creative work" as an unrealistic qualification for professionalism, which would relegate most professionals to subprofessional status.R. W. Bemer comments on Mr. Pyle's proposal for a nonspace character to precede two characters in a single print position. He argues against this proposal because it would cause errors when reading or storing data in reverse order. He suggests that the backspace character, which is between the two characters, is more suitable as it is reversible like the space convention. He also notes that strings of graphic characters may not imply movement, such as in line or page printers, and that the movement convention is only implied for character printers. K. Wright comments on Bellman's method for unstable linear systems. He points out that the method has a simpler derivation and highlights its limitations. He explains that equation (12) can be derived using a change of variable, and that a condition u = α ≠ 0 would not provide a condition on R. He also discusses the solution of equation (11) and the stability characteristics of the equation. He notes that the transformed equation can run into difficulties if v = 0, and suggests a substitution to resolve this. He also criticizes the authors' conclusion that they replaced an unstable boundary value problem with a stable initial value problem, suggesting that a direct matrix method might be more effective. W. I. Givens, as a "subprofessional," lists three major objections to Dr. Orden's article. He argues that Dr. Orden describes the Information Processing profession, not the Computer Programming profession. He also states that programmology, mathemology, and systemology are inadequately defined. Finally, he criticizes the requirement of "creative work" as an unrealistic qualification for professionalism, which would relegate most professionals to subprofessional status.