Today I saw someone post about "immortal arbitrage" on the chain again. My first reaction wasn't opportunity, but: is this deal actually just sending fees to others... For something like a sandwich attack, especially when you chase the price, sandwiching between buy and sell orders can wipe out the slippage, and you still think you've found a bargain. Anyway, now I always think through the route, slippage, and gas before placing an order; if possible, I set a limit price instead of market, split orders instead of going all-in, and if I can't beat them, I cancel. Recently, RWA, US bond yields, and on-chain yield products are being compared every day. I get tempted too, but thinking of all those front-runners on the chain, I just lower my expectations. I also save suspicious transactions by taking screenshots, both as a joke and as a reminder: don’t let them become someone else’s source of fees.