Somebody built a castle or house. The architect was also the engineer and drafter.
Somebody built a skyscraper or mansion. There was an architect who was also the drafter and an engineer doing some calculations.
Somebody built a factory and a mile stone bridge using a BIM process. There was an architect and a drafter as well as an engineer using computer to engineer, simulate and visualize the problem.
Somebody built an environmentally friendly and sustainable multi purpose building. There was an architect, a drafter and an engineer using computer accompanied by a business analyst and application engineer to keep the communication as efficient as possible. The group as a team succeeded.