Lately, I keep seeing a bunch of terms: data availability, ordering, finality... Don't be scared, basically there's one main thread: whether your transaction "counts" or not, and whether others can verify it later.

Data availability = don't hide the ledger, everyone needs to be able to see it;
Ordering = who goes first, who goes later, don't let someone cut in line and ruin the mood;
Finality = don't say one thing now and then flip to another later.

A few days ago, there was another cross-chain bridge incident. My first reaction wasn't "who's going to zero again," but rather: when will this thing truly be settled?
And during the oracle error wave, everyone was collectively "waiting for confirmation," which is pretty real—people who lost money understand. Better to be slow than fooled by false signals.

Recently, I also followed a few "science popularization experts," but after a while, I found myself more anxious the more I watched—constant bombardment of terms. Unfollowing actually helped me sleep better...
Anyway, right now I’m focusing on three things: whether data can be verified, whether the order makes sense, and whether finality can be stable.
Let the dust settle; consider it as tuition fees paid.