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A comment on Pioneering study finds more than 200,000 rats in Barcelona’s sewers. Parent comment

Re:Pioneering study finds more than 200,000 rats in Barcelon... by tetrep on Tuesday September 25, 2018 @10:54AM (#18066780)
How do you know it's deceit? It seems like you could get similar behavior if you filled two trays, one with food and the other with trash, and never provided food unless the trash tray was empty. You're training the rat to empty the tray.
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Re:Pioneering study finds more than 200,000 rats in Barcelon... by interfixus on Tuesday September 25, 2018 @12:02PM (#18067537)
Not quite. She realised I could be tricked, but only if she thorougly covered her traces. I watched the thing. It was so clearly reasoned behavior.
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Re:Pioneering study finds more than 200,000 rats in Barcelon... by seventhtiger on Wednesday September 26, 2018 @01:28AM (#18072999)
It didn't just empty the tray. It hid the food. That does imply it took an extra step based on a mental model of the situation.
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