When I first started playing on the blockchain, I really thought "first-come, first-served" was pretty fair, at most just a network lag... Only later did I understand that this thing called ordering is just lining up openly and cutting in secretly, MEV not only exploits traders' slippage, but also prewrites scripts for market making, liquidation, and arbitrage routes. To put it simply, it's not just a few "unlucky" people affected, but everyone’s assumed price formation process is being slightly distorted.

Recently, cross-chain bridges have been hacked again, and everyone keeps using them while criticizing; when oracles report errors, everyone collectively "waits for confirmation," which is quite a real consensus: when you know someone can cut in line, you'll rely more on "waiting and seeing," making the chain slower, more expensive, and more like a crowded toll corridor. Anyway, I now always assume I’m the last one to enter when I place an order.