Recently, people keep asking me what "data availability, ordering, finality" really mean. There are so many technical terms that it’s overwhelming. Actually, you just need to follow one line: can the transaction you see be reconstructed by others (don’t hide the data), who decides the order of transactions (don’t get confused by front-running), and is it guaranteed to be final and unchangeable (don’t wait too long and see it rolled back). A few days ago, a cross-chain bridge was hacked again, and it’s the worst feeling when you see the money move on-chain but can’t reconcile the details. Also, after oracle errors, everyone collectively "wait for confirmation," which basically means they’re afraid the finality isn’t solid yet. When the cat on duty is monitoring alerts, they can only stay calm first and not rush to conclusions.