I started recording those "seemingly small" changes on the chain: DEX depth suddenly thinning, the same order experiencing larger slippage, strange transaction sequencing. To put it simply, don't be intimidated by terms like data availability, ordering, finality—there's only one main point: you think the transaction is completed/safe, but is it really "counted"? Recently, Layer 2 projects have been arguing over TPS, fees, subsidies—it's lively, but what I care more about is: can the data be checked, will transactions be front-run, and will there be a crash in the end. Keeping a record for a long time is quite relieving; at least when the market's mirror reflects my greed, I can pause for a second.