Just as an FYI, one of the properties of Factor and stack-based languages is that they are extremely simple -- almost trivial -- to implement an interpreter for

Just as an FYI, one of the properties of Factor and stack-based languages is that they are extremely simple -- almost trivial -- to implement an interpreter for. The main benefit of this interpreter would probably be to simply describe the syntax and evaluation structure of a stack-based language to one unfamiliar with the concept and not, instead, as a technical case study.