I find sometimes strange the fixation with the "spread number". It is an absolutely arbitrary number, its only "special" feature is that it is close to the median of possible outcomes. When you are used to Pinnacle Asian view, the concept of price to probability gets more clear, instead of "buying points". It is more of a swift slope where you pick your spot, instead on "buy a point off the big bad spread". What is better: Miami -4 -106, or -3.5 -111, or -4.5 +102, or -5 +106? Of course, Pinny offering points for a fair price is not standard, but gives good perspective.
IMO, the only non arbitrary number in a game is the 0, aka "The moneyline". But most people hates "paying a big juice" on faves, or "having little chance " on dogs. So, the spread is for them.
What do you mean?? How are lines arbitrary? They certainly are not arbitrary.
