> it is hard to see how to make one line of Rust fit into all those millions of lines of C++ Good point. If Carbon/Cpp2front/etc ever get off the ground, they

> it is hard to see how to make one line of Rust fit into all those millions of lines of C++ Good point. If Carbon/Cpp2front/etc ever get off the ground, they could supercede any C++-to-Rust transition if they can easily integrate with existing code.