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ARM Give a man a fire and he's warm for a day, but set fire to him and he's warm for the rest of his life (Terry Pratchett, Jingo)

Ill-chosen abstraction is particularly evident in the design of the ADA
runtime system. The interface to the ADA runtime system is so opaque that
it is impossible to model or predict its performance, making it effectively
useless for real-time systems. -- Marc D. Donner and David H. Jameson.