I'm not very good at explaining those very fundamental concepts, but retail investors really don't need to memorize "block builder/relay/bundle" to the point of being able to interview... Knowing three things is enough: the transaction you send may not be included in the block in the order you want; you might think clicking "confirm" actually means it's finalized, but it could still be watched in the mempool; and many "optimizations" are actually about competing with others for the same slice of the pie. To put it simply, a bundle is just packaging several transactions and handing them to the builder, aiming to be more securely included and less likely to be excluded, but it's not a get-out-of-jail-free card.

Recently, during extreme funding rate situations, whether to reverse or continue squeezing the bubble, my feeling is: the more these times, the less you should imagine you can win in on-chain battles against professionals. The only thing you can do is chase less, open fewer high-leverage positions, avoid overly aggressive slippage, and set limit orders when possible. As for the rest... forget it, recognize which level of the food chain you're on—that's more important.