Nick, I think that the primary win is referential transparency. APL idioms raise the level on that base. The tradeoff, though, is the same as we have for functi

Nick, I think that the primary win is referential transparency. APL idioms raise the level on that base. The tradeoff, though, is the same as we have for functional but further along the road: if you develop a codebase that doesn't use common idioms it's harder to hire people to work in it. I think array languages, or at least their operation set and idioms, will move into the mainstream in the same way that functional is, but it will take time. Sustainability for your business would be more an issue of hiring and retaining talent. Reach out if you want to talk about this more: @mfeathers