tl;dr:Managers fear under utilizing resources so they orchestrate processes to put all engineers to work, simultaneously. In practice, this creates issues as projects invariably don't go to plan and resources cannot be reallocated easily. Jacob recommends a slacklog - "a backlog of things which can happen, but don't need to happen." These are ideas generated by the eng team, easily transferable between members, which can be added to the process to create resource flexibility.