Lately, I've been seeing a bunch of terms like "data availability / ordering / finality" flying around wildly. To put it simply, I follow one main thread: Do you believe this transaction will be "seen" on the chain, whether it can be front-run, and whether it might suddenly be reversed? Data availability is like opening your notebook for the whole class to copy; if you can't open it, there's no point in verifying calculations. Ordering is about who submits their work first or last; those small maneuvers in MEV are essentially about this. Finality is more like the teacher stamping your paper—once stamped, don’t expect to change your grade.

I thought I was studying hardcore consensus details, but in the end, it all boils down to a sensory question: "Would you dare to sleep on this chain?" Anyway, I now look at protocols first to see how they guarantee "visibility + no reordering + fast finality," and other tricks come second.

By the way, the NFT royalty debate has been fierce. It’s actually somewhat similar to how ordering rights and finality are implemented in secondary markets: you want creators to be "automatically settled" every time, but liquidity also wants more freedom to "not block the way." Both sides are understandable; it’s just a matter of who bears that bit of uncertainty. For now, I’ll keep drawing my tentacle notes.