There are no programs written in 100% safe Rust—the std library is written with unsafe as needed. But typically the majority of lines in the program—sometimes e

There are no programs written in 100% safe Rust—the std library is written with unsafe as needed. But typically the majority of lines in the program—sometimes even all outside std or some well-audited foundational creates—are safe. Those lines can not directly cause any unsoundness, which has tremendous value.