Michael Anthony Jackson Zitate

Michael Anthony Jackson ist ein britischer Informatiker und arbeitet als unabhängiger Berater in London, England und bei AT&T Research, Florham Park, NJ, USA. Er ist Gastprofessor an der Open University in Großbritannien.

Jackson studierte an der Oxford University und war Kommilitone von Tony Hoare. In den 1970er Jahren entwickelte er die Softwareentwicklungsmethode Jackson Structured Programming , in den 1980er Jahren entwickelte er zusammen mit John Cameron eine Methode zur Systementwicklung . In den 1990er Jahren entwickelte er die Problem Frames, einen Ansatz um Probleme zu zerlegen und zu strukturieren.

Jackson ist Preisträger des Stevens Awards. Wikipedia  

✵ 16. Februar 1936
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Michael Anthony Jackson: Zitate auf Englisch

“After forty years of currency the phrase "software engineering" still denotes no more then a vague and largely unfulfilled aspiration.”

Michael A. Jackson, cited in: Matti Tedre. The Science of Computing: Shaping a Discipline, 2014, p. 135.

“My first serious programming work was done in the very early 1960s, in Assembler languages on IBM and Honeywell machines. Although I was a careful designer — drawing meticulous flowcharts before coding — and a conscientious tester, I realised that program design was hard and the results likely to be erroneous. Into the Honeywell programs, which formed a little system for an extremely complex payroll, I wrote some assertions, with run-time tests that halted program execution during production runs. Time constraints didn't allow restarting a run from the beginning of the tape. So for the first few weeks I had the frightening task on several payroll runs of repairing an erroneous program at the operator’s keyboard ¾ correcting an error in the suspended program text, adjusting the local state of the program, and sometimes modifying the current and previous tape records before resuming execution. On the Honeywell 400, all this could be done directly from the console typewriter. After several weeks without halts, there seemed to be no more errors. Before leaving the organisation, I replaced the run-time halts by brief diagnostic messages: not because I was sure all the errors had been found, but simply because there would be no-one to handle a halt if one occurred. An uncorrected error might be repaired by clerical adjustments; a halt in a production run would certainly be disastrous.”

Michael A. Jackson (2000), "The Origins of JSP and JSD: a Personal Recollection", in: IEEE Annals of Software Engineering, Volume 22 Number 2, pages 61-63, 66, April-June 2000.

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