> "RCS is faster and uses less disk space than SCCS." That was the promotion. In fact RCS was never as fast as SCCS. RCS did not, in fact, use less disk space

> "RCS is faster and uses less disk space than SCCS." That was the promotion. In fact RCS was never as fast as SCCS. RCS did not, in fact, use less disk space than SCCS. It is hard to identify any particular where RCS was better. The code quality was abysmal. But Tichy got a PhD out of it, so there was that, anyway.