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Amazon is reportedly training humanoid robots to deliver packages
(www.theverge.com)
This is a most excellent place for technology news and articles.
Like what... stairs?
Just leave the package at the bottom of the stairs like humans do.
Also doors and gates
They may also have concluded that the public finds a humanoid robot more acceptable than those cube 4-wheeled robots that never took off that people like to tip and kick over and stuff
You don't really need to be humanoid to manipulate ddmoors and gates