Recently, people keep asking me whether "block builders/bundles" need to be deeply studied to the point of writing papers by hand... I think retail investors only need to know three things: 1) The transactions you send may not be included in the block in the order you see; it's normal for some to be bundled or inserted out of order; 2) Some failures aren't due to slow reaction speed, but because someone saw it and changed the bundling method to push you out; 3) To avoid pitfalls, don't blindly trust "on-chain fairness," focus on controlling what you can, like not setting large slippage randomly or rushing during congestion. The AI agent's automated trading system is even more outrageous—its narrative is full of hype, but those who really prioritize safety are actually the ones who check the path, authorization, and rollback thoroughly... Anyway, I have just one sentence: don't believe stories, first look at the settlement.