"A team of research assistants visited 60 restaurants, where they observed a total of 497 interactions between diners and servers. While visiting the restaurants, the research assistants recorded the estimated body characteristics of both the diners and the servers. They also recorded how much food and drink was ordered."
And even if this was valid data and valid conclusions, so what? How does this help humanity? Do we make it a policy that only slim waitresses can serve people? Would that reduce over-consumption?