Recently, I saw a bunch of people being scared by words like "data availability / ordering / finality." Actually, just focus on one main thread: after you hand over a transaction, who sees it first, who queues it first, and whether it can finally be settled. To put it simply, DA is like "whether the ledger is placed where everyone can access it," ordering is "who cuts in line," and finality is "whether this page can be nailed down and no longer changed." Retail investors complain about miner/validator income and MEV causing unfair ordering, and I can really empathize: you think you're making a transaction, but in reality, you're providing arbitrage material for others... My current patchy fix is small adjustments: chase fewer hot topics, try to use chains/rollups that can clearly explain the ordering rules, and don't leverage up until you're sure it's stable. Just start with this.