Lately I keep seeing words like "block builders" and "bundle," and I feel like if I don't understand them soon, I'll be considered a noob and get taken advantage of... But honestly, retail investors don't really need to dive into academic papers. I know about three things roughly: 1) The transaction you send out may not be included in the block in the order you think; it could be snatched by someone in the middle; 2) Some "bundling" involves grouping several transactions together, which is more stable and faster, but the downside is you're dealing with a more black-box channel; 3) Don't set high slippage arbitrarily, don't trade in thin pools, and you'll avoid half of the nasty stuff. As for whether to research builder lists, MEV, and so on, I'm too lazy... I'm more concerned about the bills: anyway, on-chain yield products are now being compared to U.S. Treasury yields. The hotter it gets, the more nervous I am. The returns look tempting, but just thinking about the tax forms makes my scalp tingle. That's all for now, I'll add more tomorrow.