I think think this article and the discussion demonstrates more about cognitive bias than anything else. The assumption that an individual is purchasing 20 piec

I think think this article and the discussion demonstrates more about cognitive bias than anything else. The assumption that an individual is purchasing 20 pieces is probably a leap in the wrong direction. I would assume that McDonalds are direct marketing this price point to families, who they know are buying a range of other items on top of a shared serving of chicken. It's like a cheeky wink to them that they get a bonus for the bulk custom, that they know no individual could eat, just like a fish and chip shop will throw in more calamari than ordered for a large order. The reward probably doesn't cost them much but it keeps these group orders coming back.