Last night, I saw a bunch of people arguing about miner/validator income, MEV, and fair ordering. Basically, it’s like you think you’re placing an order, but in reality, someone might be “cutting in line.”

Then I suddenly felt a bit scared: a couple of days ago, I almost chased a trade at market price, but luckily I changed it to a limit order and split it into smaller orders at the last minute, so I didn’t get slippage that made me question my life… it could also just be luck.

I think retail investors only need to know this much: on-chain transactions are not processed in the order you submit them, especially during large trades, popular pools, or high volatility;
don’t get caught up in the details of builders or bundles to memorize them, the key is to change your trading habits—use market orders less, don’t cram too many actions into one order, and wait when you can.
Anyway, I’m not aiming for quick riches, just don’t want to be “taught a lesson” by the invisible hand.