Recently, I saw a bunch of people talking about block builders and bundles, saying that if you don't understand, you'll be kicked out of the market... I really don't bother explaining anymore. Retail investors actually know enough at this level: when you send a transaction, it doesn't necessarily go directly into a block, it might be "packed" and smuggled through private channels, and the order might also change. All you can do is not explicitly state on the chain "I'm willing to be slaughtered." To put it simply, avoid high slippage, don't chase hot pools, use limit orders when possible, and don't treat order cancellations as a matter of face. Over on L2, they compare TPS, fees, and subsidies every day, but I care more about: is the entry point safe, is the bridge stable, and can I survive if something goes wrong. Being able to sleep well is better than anything.