To be honest, when I’ve talked with friends recently about data availability, ordering, and finality, they always say they’re scared by the terminology. Actually, you only need to draw one line: block data is like a ledger—who writes first, who matters, and in the end there must be a fixed, definite result. Ordering is the order of bookkeeping, and finality is when the ledger is stamped and can’t be changed anymore. In the primary market, these concepts basically come down to the project team’s honesty and the network’s security.

Recently, hardware wallets have been out of stock badly, and phishing links are everywhere. People’s security awareness really needs to keep up. My older model has been in hand for two years, and I haven’t switched yet, but before every time I sign a transaction, I always take another look at the address. Anyway, security isn’t a trick—it’s a habit.

What I learned wasn’t techniques, but patience toward uncertainty.