[logicchains]

>In particular we avoid "academic" features of the language like functors[2] and first class modules, because they obscure the flow of the code and are a headache for ordinary programmers to understand.

If you're hiring OCaml programmers who can't understand (or learn to understand) functors, you're probably doing something wrong. Even using the stdlib Hashtbl requires an understanding of functors.

[rwmj]

As I said, the problem with functors is the same as the problem with OO - it obscures the flow of the code. You can look at some function call, and not understand (just by looking at the text) which code executes next. I'd prefer not to hire people who will "functorize" (nor OO-ize) everything. When I said "ordinary programmers", I'm referring mainly to myself, but also to casual contributors.