Are safety-critical system developers immune from prosecution ?
The paper A Maturity Model for Automated Software Testing, by Mitchel H. Krause, was originally published in 1994. Here is an except:- <<THE SOFTWARE TESTING MATURITY MODEL The software testing maturity model, shown in Figure 1, is similar to a software process maturity model that is familiar to many software engineers. It has been described by Watts S. Humphrey in his book Managing the Software Process,2 and has been cited by Frank Houston, a former FDA staffer, and Steven Rakitin in presentations to the Health Industry Manufacturers Association.3,4 The version shown here as Figure 2 is adapted from Rakitin's presentation. The process model adapts well to automated software testing because effective software verification and validation programs grow out of development programs that are well planned, executed, managed, and monitored. A good software test program cannot stand alone; it must be an integral part of the software development process. Level 1: Accidental Automation. The first level of the software testing model--like level 1 in the software process model-- is characterized by ad hoc, individualistic, chaotic attempts to get the job done. Important information (for example, what to test) is not documented and must be extracted from in-house experts. Test plans are sketchy. Test results are not documented consistently. Schedules slip. Either products are delayed or testing becomes a cursory, poorly documented exercise. Management is uninvolved or uninformed. This level has been designated Accidental Automation because the use of any automated tools or techniques comes about almost as if by accident and is not supported by process, planning, or management functions. Products released on the basis of such testing may well be accidents waiting to happen. Testing at this level may be appropriate only for a product that has no potential for harming the patient or user; it is never appropriate for a computerized medical device. Level 2: Beginning Automation. The second testing level corresponds directly to Level 2¬Repeatable in the software process maturity model (see Figure 2). There are hundreds of capture-and-replay test tools on the market today that simply repeat the responses of a system under test.5 As in the process model, however, these tools have limited capabilities and lose their economic usefulness quickly as a product changes. Level 2 testing is still dependent on information locked in the minds of in-house experts, although documentation is beginning to appear in the form of software requirements specifications (SRSs) and test requirements specifications (TRSs). However, in most cases, large portions of these documents are written after the fact and used to meet regulatory requirements rather than to direct the development and test processes. Writing them does, however, provide good practice for moving to level 3. Level 3: Intentional Automation. At the third level, automated testing becomes both well defined and well managed. The TRSs and the test scripts themselves proceed logically from the SRSs and design documents. Furthermore, because the test team is now part of the development process, these documents are written before the product is delivered for testing. Consequently, schedules become more reliable. Level 3 is appropriate for many medical device manufacturers. Level 4: Advanced Automation. The highest testing maturity level is a practiced and perfected version of level 3 with one major addition: postrelease defect tracking. Defects are trapped and sent directly back through the fix, test creation, and regression test processes. The software test team is now an integral part of product development, and testers and developers work together to build a product that will meet test requirements. Any software bugs that do occur are caught early, when they are much less expensive to fix. When testing is performed at this level, an FDA inspector can pick up any piece of product documentation and trace the development process all the way from the SRS that describes the feature to the test results that validate it. >> Would "Level 4 automated testing" automatically occur unless it was sabotaged by office politics ? Would it be criminally irresponsible not to do "Level 4 automated testing" ?
Asked By: remyr - 5/15/2009
Best Answer - Chosen by Asker
no, criminally negligent developers should not be immune
Answered By: Bob - 5/15/2009
Additional Answers (3)
WHO is above the LAW? Who should be above the LAW? The Spirit giveth life.
Answered By: Elisheba - 5/15/2009
yes, they are immune to every disease known to man because they are demons.
Answered By: Minski - 5/15/2009
No , Level 4 automated testing , is perfect , or nearly so , but life is not perfect , and so we can't be held responsible , for those things that we don't do ourselves , and believe me by the time you get to leavel 4 there is alot more then one person involved , and therefore the term pifff or is that pufffff , what... More
Answered By: darkcloud - 5/16/2009
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