Also, learning all about memory, and CPU in the Von Neumann model is not necessarily reflective of modern computing models. Furthermore, it deprives us of the question of how high level programming should be done. Low level is not the most common paradigm for programming these days. Its more effective Software Engineering if we can hide away details of the architecture and the machine and let the language/platform deal with them. A great example of this is SQL, which although it has its problems as a language, is great at hiding away all the parallelism that goes behind it.
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