Brook's Law - "Adding manpower to a late software project makes it later." This applies to all projects, not just software in my experience. Everyone thinks yo

Brook's Law - "Adding manpower to a late software project makes it later." This applies to all projects, not just software in my experience. Everyone thinks you just need to find the right expert who will magically just slot right into the team and process and hit the ground running. In practice, the people worth hiring take 4-6 weeks to get up to speed with the help of an existing project member, and the people not worth keeping start spewing out code that is ultimately neither helpful nor correct the moment they have access to your repo.