Volumetrics not new

This article: Fill Up Your Plate And Lose Weight makes it seem like volumetrics - the concept and the book - are new. This isn't a new concept, it was around when my mother was trying to lose weight. I think underlying thinking behind volumetrics is similar to the three apple a day diet. Personally, I haven't found that I can trick my body into being full with lots of fruits and vegetables. Anyone else? Leave me a comment.