Last night, I was educated on the blockchain "queue jumping" again: I placed a small order hoping to catch the wave, but the transaction price was pushed like someone gave me a shove from behind... Later, I checked the block explorer, and a few transactions in the same direction before and after ended up sandwiching me, basically it’s all about the order sorting. Who does it affect? For someone like me who chases small gains and provides liquidity in the market-making pools, I still pay the fees, accept the slippage, and have to keep my own mindset in check. Even more ridiculous is that everyone calls for fairness, but when it comes to NFT royalties, it turns into two camps: creators want to take more, secondary markets want smoother liquidity, and in the end, it’s whoever can "queue jump" that gets the advantage. Anyway, now I always check the mempool before placing an order to see if it’s crowded, so I don’t impulsively treat it as fuel.