The thinner it is, presumably the easier it is to pack and load. Flat-pack is all about efficiently making it easy to carry in the car, and also trying to shov

The thinner it is, presumably the easier it is to pack and load. Flat-pack is all about efficiently making it easy to carry in the car, and also trying to shove as many pallets into a truck or warehouse as possible. In a similar vein, much of what used to be glass or metal is now plastic, because it's lighter and thinner and you can use the space saved to pack more into a pallet.