&gt; Ahem<p>Maps are not concurrency-safe, you know what else isn&#x27;t? Integers, floats, pointers, structs. And not only in Go, but in pretty much almost all languages with mutable state, like C and C++.<p>The map implementation in Go is consistent with the rest of the language, plus it allows for great performance under some rather common scenarios.<p>But I guess it&#x27;s fashionable to snark on message boards than rather understand all these facts.