There's no proof that an advanced civilization requires a complex supply chain. In fact one of epochs of technological progression that occurs after an industr

There's no proof that an advanced civilization requires a complex supply chain. In fact one of epochs of technological progression that occurs after an industrial revolution could possibly be an industrial simplification where supply chains and manufacturing processes reach a sort of apex in complexity that leads to absolute simplification. It may just be that such a developmental landmark is a prerequisite of a civilization reaching interplanetary scale and it may even be a great filter.