How much should retail investors understand about block builders and bundling? I think just enough: knowing that your transaction might not be "randomly packaged by miners," but rather someone bundling a bunch of transactions to bid, and maybe trying to sneak in a transaction for you; so don’t blindly believe that low slippage = safety, slippage is just the permission you give yourself. Usually, I focus on three things: whether to use a private channel, whether the routing is indirect, and whether there are two mysterious "passing" orders before and after the transaction. It’s more like dodging cars at an intersection than studying the engine. The kind of inflation + studio-driven blockchain games that have price spirals from the start are actually the same—no matter how fancy the mechanism, it all comes down to "who runs first, who gets squeezed." Anyway, I’d rather go slower than be the most urgent traffic entry point.