Places that have lots of trash around will vandalize an unsupervised robot.

Places that will leave alone an unsupervised robot don't have lots of trash around.

Entirely disjoint sets.

How are the two correlated?

Local wealth & social class. Also population density.

Are you suggesting that wealthy people litter less? Are you suggesting that wealthy people can not be vandals?

Or are you suggesting that common people are littering vandals?

People want streets cleaned. Not only will people not pay for that, they'll steal from anyone who tries to clean the streets.

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