Well the 89 is a CAS in disguise most of the time which is mentioned in passing in the article. But, I agree I almost never want the full power of Mathematica/

Well the 89 is a CAS in disguise most of the time which is mentioned in passing in the article. But, I agree I almost never want the full power of Mathematica/sage initially but quickly become annoyed with calc apps. The 89 and hp prime//50 have just enough to solve anything where I wouldn’t rather just use a full programming language.