1) events from decentralized sources appear in a different order from every point in space; therefore, events can only be sequenced in a centralized location, and sequencing is necessary for consensus.
1） 来自分散源的事件从空间中的每个点以不同的顺序出现；因此，事件只能在集中的位置排序，排序对于达成共识是必要的。