Users pick full-featured, easy-to-use proprietary software over narrow-use OSS software with awkward UX all day. Stein had a grand vision to make the many OSS m

Users pick full-featured, easy-to-use proprietary software over narrow-use OSS software with awkward UX all day. Stein had a grand vision to make the many OSS math tools actually preferable. I was in the room for a couple early Sage hackathons and the purpose seemed right on.