Recently, everyone has been talking about blockchain builders and bundles, and it’s starting to sound like metaphysics. To put it simply, retail investors only need to know that they might be "cut in line/夹心" — no need to memorize the full set of terminology. Just remember: the transaction you submit may not be included in the block in the order you expect; someone might bundle a bunch together and insert them all at once, casually treating your slippage as a buffet... It's funny but frustrating. My approach is very simple: don't use outrageous slippage, don't chase pools that are obviously about to be front-run, and when necessary, use private/protected routing, at least don’t make it obvious. Recently, AI agents are being hyped for automatic trading, but their security settings are often overlooked; anyway, if something goes wrong, they won’t compensate you. First, understand authorization and signing thoroughly.