Recently, people have been asking about terms like "data availability, ordering, finality," which sound like exam topics.

Actually, you just need to focus on one main thread: when you buy an NFT on the chain, the biggest concern isn't speed, but "what you see isn't the same as what others see," or that the order of transactions gets front-run, and it might even collapse and reorganize later...
In simple terms: data must be visible, order must be logical, and the outcome must be confirmed.

So how do I judge if a chain or layer 2 is reliable?
First, see if the community is arguing about "stuck" or "rollback," then check if big traders' orders are constantly being front-run, and finally, whether the finality takes so long that people hesitate to screenshot and share in groups...

AI Agents are also quite interesting this wave. They boast "automatic trading to free your hands," but at the same time, they authorize all sorts of signatures and interact with contracts like opening blind boxes;
Anyway, I now trust more in "fewer permissions + slower confirmations," even if I miss out on a good deal, I’d rather not have someone snatch the whole pot of soup.