Interesting circular reasoning but.....That is why the directives / laws override any "natural instincts" AI/robots learn through their neural learning. As Asimov wrote the directives can not be overridden (or should not!); since the elderly, sick, and poor are people too they can not be hurt because of the overriding Zero'th Law - No Harm to Humans. If we lose the ability to control machines in any literal sense completely we will have existential problems then.