In education, a scaffold is the support we give to a student to help them solve hard problems. As a student progresses we remove the scaffolding and eventually the student can solve the full problem without difficulty. When we teach children to swim we don’t simply throw them into the deep-end of the pool and let them get on with it. We provide them flotation aids and spend time in the water with them, helping as needed. We gradually remove the support. Scaffolding is the same idea applied to intellectual efforts. Many Roamer tasks adopt this principle.