Nothing is thrown away. It is only moved somewhere else, and the somewhere else is an engineering problem. The moment a collection vehicle swallows a bag, the waste is compacted to roughly a quarter of its loose volume by a hydraulic packer plate developing several hundred kilonewtons of force. That compaction is not tidiness. It is economics, because haulage cost scales with trips rather than tonnes. Few loads travel straight to a final destination. They go to a transfer station, where waste is bulked into larger trailers or rail containers, then onward to a materials recovery facility. Inside a modern MRF the stream is separated almost entirely by physics rather than by hand: - Trommel screens rotate the flow through perforated drums, splitting material by particle size - Ballistic separators throw the stream onto inclined paddles, dividing flat items from rolling ones by rebound behaviour - Overband magnets lift ferrous cans off the moving belt - Eddy current separators spin a ro...