Today I saw someone say, “There are so many on-chain arbitrage opportunities” again, and my first reaction wasn’t excitement—it was anxiety… Let’s be honest: the tiny price difference you see in the pool is very likely the fee source that someone else is waiting to take a bite out of. Sandwich attacks are really disgusting. You think you’re fast, but in reality, the order isn’t really in your hands at all. The income on the side of miners/validators, the MEV, and whether transaction ordering is fair—recent complaints about this also aren’t without reason.

These days, I basically treat “big slippage + popular coins + small pools” as an alarm. I’d rather do two fewer trades than end up being someone else’s “oil money.” Next time I’m tempted to act on impulse before confirming, I’ll first recheck the transaction’s approval and the estimated slippage. That’s how I’ll do it for now.