Wu said that a16z crypto article pointed out that blockchain protocols face fundamental trade-offs between low latency and censorship resistance. In standard Byzantine Fault Tolerance (BFT) consensus, when more than one-fifth of validators may act maliciously, submitting a block in the best case requires at least 3 rounds of communication, while BFT protocols with strong censorship resistance guarantees require at least 5 rounds of communication. a16z stated that the additional rounds provide stronger guarantees for users: censored transactions no longer need to wait for an uncertain number of blocks, but can be guaranteed to be included within 5 rounds in good conditions.