Lately, I keep seeing people scared by the words "data availability / ordering / finality." Actually, just follow one line: you think you're doing something on the chain, but you're actually waiting for someone to publish your data, queue it up, and then stamp it with "This time, no changes." Whether data can be seen by everyone = don't let your transactions become a black box; who decides the order = whether you're at the front or pushed to the back; finality = whether tonight's rain suddenly turns into sunshine... Anyway, when I see cross-chain bridges having issues or oracle price feeds acting up, my first reaction isn't to rush in and buy the dip, but to ask "who is waiting" and "who is waiting for confirmation." To put it simply, many pitfalls aren't because you can't read candlestick charts, but because you treat "confirmation" as a default benefit. Forget it, I won't talk about how to choose a chain now. I just remember one thing: if I can't understand who is queuing or who can rollback, I'd rather go slower.