Carbon's C++ interop and path to memory safety

HN cites it as the authoritative statement of Carbon's memory safety plans, including its borrow-checker-like direction.

Chandler Carruth's CppNow 2023 talk describes Carbon as a successor language to C++ rather than a superset, focusing on C++ interop and a path to memory safety in large existing codebases. It explains why Carbon takes a different approach from Cpp2 and Circle.