Specialization is useful, but it's also useful to have some minimal level of design competence, just so that you can make a prototype and not have people reject

Specialization is useful, but it's also useful to have some minimal level of design competence, just so that you can make a prototype and not have people reject it just because the design is lousy. (Also, having a basic grasp of design will help you decide whether your designer is doing a good job.)