Recently, I've seen a bunch of people mention "data availability, ordering, finality" again, sounding like a meeting discussion. Actually, focusing on one main thread is enough: what you do on the chain, whether it can ultimately be "seen + acknowledged in the same order + not reversed again." Data availability is like whether the script is public, ordering is like how the director edits the film, and finality is whether the ending can suddenly be changed after the release... Every time I think of this thread, I get itchy, mainly because I'm afraid of being tricked by this false sense of security of "appearing confirmed" into chasing orders. Recently, the ETF capital flow wave was also interpreted together with the risk appetite of the US stock market. When I see the comments section arguing, I want to go look on-chain: who is moving, and on which route. Anyway, don’t be scared by the terminology first; just focus on "can it be checked, will it be jumped in line, will it reverse" — that’s enough.