you are correct
the genetic reason humans put on weight is to be able to survive lean times
I am not sure exactly what you mean when you say I am correct. I understand the part about gaining weight to survive lean times but why do these people scrambling for scraps look well fed? I have been reading about famine in Venezuela for a while now, why don’t they look skinny and dirty yet? An average sized adult on a one thousand calorie a day diet loses weight rapidly and I would expect they would be getting well under a thousand calories daily if they are scrambling in the trash for food, they could burn more calories looking than they obtain from what they find.