To summarize the answer, Go was created as a better replacement for Java and other managed languages. Rust was created as a better replacement for systems progr

To summarize the answer, Go was created as a better replacement for Java and other managed languages. Rust was created as a better replacement for systems programming languages (the author brings this point in the conclusion). This claim however is somewhat misleading: "Rust is a C++, not a C". It's clearly not either of them - it's a new language. However, it's a good replacement for both C and C++. May be the above idea means, that those familiar with C++ concepts can find Rust easier to understand - that's true, it uses major ideas from it like scope based resource management (aka RAII) and so on. But it uses other ideas as well. No language is perfect in absolute sense, and each has its own trade offs. But the above gives a rough framework to answer "why Go and not Rust" or "why Rust and not Go" in some particular situation. There is always going to be some overlap area, where both are adequate enough, so any answer to such questions would be moot there.