Drawing on archival paperThis ad illustrates just that.
Robots used as dog walkers, just got tired of picking up poo. Well nasty stuff to walk in, ruining shoes, leaving less than desirable odours and staining floors, and carpets, the robots came up with this suggestion, an escalator, serving refreshments of course, to transverse the poo pits. Pre-fab., cost effective, Poo Pit managers.

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