Today it rained and the traffic was so bad I doubted my life, and my coffee also got cold... Browsing on the chain, I saw a bunch of "good opportunities" that are actually more like other people's transaction fees. As for sandwiches, honestly, you think you've caught the price difference, but in the end, the front and back trades eat up all the slippage, leaving only some crumbs and having to thank "the deal went through." Arbitrage is the same; it looks pretty on the chart, but when you actually get started, you realize cross-chain is slow and gas fees spike, and the profits get eroded. Recently, those new L1s/L2s have started issuing incentives to attract TVL, and I really empathize with old users complaining about mining, harvesting, and selling: the on-chain activity looks great, but when it gets lively, bots and robots also start working. Anyway, I now care more about real transactions and net flows between bridges; otherwise, all the excitement might just be working for others.