Ancient artisans achieved sintering empirically without understanding or naming the underlying process, so the entity's single origin-year property cannot represent both an ancient craft practice and a specific engineering milestone at once.
What would resolve this A convention for whether this atlas's "origin-year" property means first craft use or first deliberate engineering formalization would settle which date belongs on this fact, consistent with how the atlas already treats other ancient-craft-to-modern-engineering methods.
OpenHistory of technologyWikipedia contributors, Sintering (Wikipedia)