In 6-max no-limit 'em, the single biggest factor in whether a hand is profitable isn't the cards — it's where you're sitting.
Each has a different action order. () plays first post-flop and has 5 players who could wake up with a better hand. The plays last post-flop every single street. That information advantage is worth real money per hand.
The rule that cascades from this: the later you are, the wider your range. opens roughly 15% of hands. The opens ~50%. The , forced to play out of the whole hand, raise-or-folds a tight range. The gets a discount on calls and defends wide.
isn't some abstract poker platitude. It's the core economic structure of the game.
Key points
✓UTG = tightest open range (~15% of hands)
✓Button = widest (~50%), best seat at the table
✓SB plays OOP all hand — raise or fold, never limp
✓BB already invested 1bb — defends wide with pot odds
✓Playing wider from early position is the #1 beginner leak