It's referring to being able to pin dependencies easily so that you have a stable set of dependencies which is defined. At present go get, while convenient, fet

It's referring to being able to pin dependencies easily so that you have a stable set of dependencies which is defined. At present go get, while convenient, fetches from head, so things can break when you move computer for example and refetch dependencies, or a new team member comes on board, or if you have an open source project.