He also helped in the development of J with Roger Hui and Ken Iverson, the creator of APL, by writing a one page interpreter for J over an afternoon or two. I a

He also helped in the development of J with Roger Hui and Ken Iverson, the creator of APL, by writing a one page interpreter for J over an afternoon or two. I am always drawn to prototyping and writing solutions in J. I am not a web developer, but for mathematics and statistics, it is amazing. I've always wondered how similar and different K and J are on a deep level, but I have always stuck with J.