Lately I keep hearing people talk about block builders, bundles, MEV and so on. Honestly, retail investors don't need to turn themselves into researchers. You only need to know about three things: First, the transaction you send out may not be included in the block in the order you think; others can "pack" and reorder transactions; Second, the small slippage/ chasing orders in the public mempool can be easily monitored, don’t impulsively make large market orders; Third, when the chain is very congested, using protected routing/private forwarding (don’t ask me which one, just choose a trusted provider) can help you avoid some front-running. As for the builder ecosystem, auction mechanisms, I only have a rough understanding myself. More importantly, it all comes back to due diligence: Are there any vulnerabilities in the contract, how are permissions set, and who takes responsibility if something goes wrong. By the way, recently the debate over privacy coins/mixing compliance has become very polarized. My feeling is: put the technical evolution aside for now, ordinary people shouldn’t treat "privacy" as a get-out-of-jail-free card. Use it with boundaries in mind. That’s all for now, I’m tired.