I used to install a "person who can understand code" once before, staring at GitHub commit history for a long time, only to realize I was actually counting green dots... Later I learned my lesson: beginners should look at credibility first, don't hard read the implementation details, first check if there are proper audit reports, whether the report explains key risks in plain language, whether it has been fixed, and how long it took to fix. Then, upgrade permissions: can the contract be changed arbitrarily? Who has multi-signature authority, how many signers, is there a timelock, at least avoid a single key that can change things at will.

Recently, an old protocol suddenly said it needed an upgrade. I couldn’t understand what was changed, so I looked into its historical vulnerabilities and fix rhythm. The more I looked, the more I thought, "Hmm... forget it," and just left it alone. Now, MEV and transaction ordering fairness are heavily criticized, and the rewards for validators/miners involve a lot of incentives. Basically, who comes first or second on the chain can become a cost. If you don’t understand, it’s okay to leave it alone. It’s not shameful; what’s shameful is rushing blindly and then blaming the world.