Lately I keep hearing people talk about block builders, bundles, MEV and so on. Basically, retail investors don't need to learn how to write bots; just knowing that "transactions might not be included in the order you submit" is enough: don't chase prices when liquidity is thin, don't click on those unfamiliar aggregator pop-ups randomly, and try to break important operations into smaller parts, use reliable front-end interfaces, and if necessary, wait a few more seconds. As for private bundling or directly sending transactions to builders... it sounds cool, but for someone like me who only watches collateral ratios and liquidation lines, the core message is: don’t let a single slippage plus delay push your position close to the liquidation threshold. Modularization and the DA layer have been hot topics lately, developers are excited, and it's normal for users to be confused. I see complexity as an enemy, and I filter out most of the noise with the question: "Will this affect my transaction price or liquidation risk?"