this is why very very few people will know all parts of the engine and dev teams would rather assign specific parts of an engine to different devs/specialists.

this is why very very few people will know all parts of the engine and dev teams would rather assign specific parts of an engine to different devs/specialists. this even make sense for a company to do that. i can't imagine what would happen if the few guys who know all were to leave the company with all the knowledge.