Lately I keep seeing words like "data availability / ordering / finality," which sound like exam questions... I realized there's a main thread: what you send out, can others actually see it (availability); after seeing it, in what order is it recorded (ordering); and finally, will this record be overturned or changed (finality). Basically, it's "can see, how to order, does it count." By the way, hardware wallets have been out of stock lately, and phishing links are everywhere. Now I pause for two seconds before clicking any "airdrop/mint," preferring to miss out rather than risk burning the small fish or ruining the catch, especially since my budget is still on paper.