RT: 5. I should also add that the core *idea* of sharding has survived unscathed.
Blockchain 1.0: each node downloads everything, have consensus
BitTorrent: each node downloads only a few things, but no consensus
Ideal: BitTorrent-like efficiency but with blockchain-like consensus
转发：5。我还应该补充一点，切分的核心理念安然无恙。
区块链1.0：每个节点下载所有内容，达成共识
BitTorrent：每个节点只下载一些东西，但没有共识
理想：类似BitTorrent的效率，但有类似区块链的共识