Lately I've been watching the mempool, and it feels like checking the weather forecast: even though everyone is running on the same road, some people can cut in line, and casually loosen your shoelaces. To put it simply, MEV/ordering "cutting in line" directly affects not who earns more, but who fails to execute at the right time, executes but with increased slippage, or gets split into two price gaps—small orders are okay, but larger ones really hurt, and a quick review makes it obvious.

Fairness on the chain is quite awkward: you might think it's the highest price wins, but it's actually a combination of information, speed, and network relationships. Expectations of rate cuts fluctuate strongly, and discussions about the dollar index rising and falling with risk assets are lively, but for the chain, when sentiment rises, congestion follows, and there's even more room for cutting in line... Anyway, I'm now more conservative with my orders: if I can set a limit price, I do; if I can split orders, I split; when I see active "sandwich" attacks, I hold back. Forget it, I won't talk about how to prevent it—talking too much would just sound like a tutorial.