For single files RCS is very very good and simple.  A DVCS is good when there are multiple files that are related, and changes happen across them.  This project should have been a single tacit.scss somewhere, and in that case, RCS is better than using a DVCS, IMO.<p>I use RCS for example for my Org-mode files, which are a bunch of independent files.  Each of them have their own history in their own ,v files.  Thus, the changes to my CV does not affect the history of, e.g., my lecture notes.