> Right now I’m working with a guy who wants to write an interpreter… Stuff like that works out great if you have a static set of features that will never chan

> Right now I’m working with a guy who wants to write an interpreter… Stuff like that works out great if you have a static set of features that will never change and you can at one point say "it's done", and won't have to touch it again. Problem is that features are almost never static across their lifetime, and some poor sucker has to modify it at one point.