I'd note that this could be seen as much as a statement about the organisation one is moving into as to the skill of the programmer involved. i.e. If it takes

I'd note that this could be seen as much as a statement about the organisation one is moving into as to the skill of the programmer involved. i.e. If it takes someone 3 months to be productive, there's probably something wrong with the build system/documentation, or code organisation/structure (+ comments, or lack of), lots of knowledge in people's heads etc.