Lately I keep hearing people talk about blockchain builders, bundles, MEV, and so on. I actually just see it as a real-world version of "someone cutting in line or packing transactions" on your order. How much should retail investors know to be enough? To put it simply, don’t chase after becoming a researcher yourself: just remember a few key points—don’t randomly click on unknown RPCs, don’t force your way into pools with extremely poor liquidity, and don’t set too large slippage; for large amounts, break them up, it’s better to spend a bit more gas for peace of mind. As for the rest, I won’t bother explaining, just accept randomness… after all, on-chain, there’s always someone faster than you. Plus, with recent tax increases and tightening or loosening of compliance in some places, and the fluctuating expectations for deposits and withdrawals, I’m even more inclined toward low frequency: avoid moving if you can, and first record every impulsive trade in your ledger—most of the losses aren’t technical, but from itchy hands.