Recently, I got the itch again and bought a yield aggregator, and that APY on the page really knows how to tempt people… But honestly, behind it is just a bunch of contract nesting + external protocols as counterparties. You think you're “depositing,” but actually you're rating multiple layers of code and integrity. Even more outrageous, when the fees are high, I comfort myself with “I'll make it back anyway,” but when I check, the earnings might not even cover the gas I spent confirming the transaction. Modularization and the DeFi layer have been a hot topic among developers lately, but users (me) are mostly confused: no matter how advanced your explanations are, it all boils down to “who actually holds the money and whether it can be withdrawn.” My current patch is: test small amounts for two days first, check contract permissions and whether I can exit urgently, and don’t go all-in in a panic… but I also know that when I see the green APY, I still tend to slip up.