In Rust you know there is no memory issue because there is no unsafe block. In C you don't know if there is no memory issue, there are many way to write a hello

In Rust you know there is no memory issue because there is no unsafe block. In C you don't know if there is no memory issue, there are many way to write a hello world that has memory issue. char hello[5] = "Hello"; Oops, forgot the \0, memory issue when printing that string. Even complex driver in rust will have very little amount of unsafe because of correct use of (often zero cost) abstractions. And it is much less mental drain to check only that, than when every single line is a minefield that could hide undefined behavior