On Mon, 4 Sep 2006, Pascal Obry wrote: "[..] Maybe a good approach to this is to point out that OpenMP/MPI is the procedural way to handle parallelism, Ada goes far beyond as it has unified the OO paradigm and the parallelism/concurrency. So in a sense the Ada solution (and Java if I can pronounce this word here :) is the "revolution" with have seen with the OO paradigm in the nineties. [..]" Neither Ada nor Java is revolutionary and it is written that even before concurrent object oriented languages' inheritance anomalies were called as such, they had been documented in the 1980s before Java existed and before Ada became object oriented (though of course, we can cite many publications from that era in which it had been claimed that Ada 83 is object oriented). You seem to take it for granted that concurrency and object orientation are fantastic. They have their benefits and they have their disadvantages, and juxtaposing them can result in issues not possible otherwise, e.g. an inheritance anomaly. Though it had been immodestly claimed in Michell and Lundqvist, "Extendable, dispatchable task communication mechanisms", Proceedings of the ninth international workshop on Real-time Ada, 1999 that "This paper proposes Ada language changes that would make protected types and tasks partners in object oriented programming and would cure the inheritance anomaly", Michell et al. have admitted in "Integrating Object-Oriented Programming and Protected Objects in Ada 95", ACM Transactions On Programming Languages and Systems, Vol. 22, No. 3, May 2000 that: "[..] Inheritance anomalies in Ada 95 with extended protected types can still occur[..]". The proposals in that "TOPLAS" paper were discarded in favor of what was chosen for Ada 2005, and it is written in WWW.Ada-Auth.org/cgi-bin/cvsweb.cgi/AIs/AI-00345.TXT?rev=1.25 "[..] An important advantage of eliminating inheritance of any code or data for tasks and protected types is that the "monitor"-like benefits of these constructs are preserved. All of the synchronizing operations are implemented in a single module, simplifying analysis and avoiding any inheritance "anomalies" that have been associated in the literature with combining inheritance with synchronization. [..]" However, grand claims have been made before and it may be naïve to believe that people who can not otherwise program well can program concurrent systems brilliantly in Ada 2005. The language AspectAda was not created because its creators are satisfied with Ada. At least one different concurrent object oriented language has been created which supposedly can not have inheritance anomalies. Regards, N. C. P. Gloster