Adding more manpower to a late software project makes it later. This is because 1) it takes time for new people in a project to become productive – they need time to learn about what has already been done and to become integrated with other team members; 2) the number of required communication channels increases factorially with the number of people added; 3) there is only so much division of labour that can be done before co-workers start getting in each other’s way.
“Anytime someone puts a lock on something you own, against your wishes, and doesn’t give you the key, they’re not doing it for your benefit.” Cory Doctorow was saying this around 2003 in the context of DRM locks placed on some digital media purchased in a store or online, such as movies or audio recordings. Doctorow was an advocate of file sharing. DRM = “Digital Rights Management”.