[LurkingGrue]

The other point that people seem to not miss from that movie is the fact that growing portion sizes and upselling has gotten us to eat more.

Just because people are given the option for more food for another .30 more people go for it not realizing they may be getting another 500 calories they shouldn't be consuming.

I would say to friends, "Do you honestly need the extra food?" and I would get the "But it's a bargain!" response.