[darksaints]

The sorting absolutely should be done downstream, ideally with robots doing the vast majority of the work.

[baroffoos]

It is done that way. Thats how you can put a aluminum can and cardboard in the same bin. But what does a robot do when a tictac container comes in with a Polyethylene body and a Polypropylene lid. Does it sit there with high precision fingers trying to pick the glued in lid off?

[beachy]

It uses its fricking lasers, obviously!