I don't think that my point is getting across because you're focusing on the people that you have most commonly observed in the environment around you. Sure - people can work harder, most of us are average and we don't need to get close to our limits in our jobs. That's not who I'm talking about. I'm talking the extreme outliers on the lower end of the intelligence distribution. Those are the people for whom the innate intelligence limit is low, by definition.
People with IQ below 75 can be classified as having a mental disability. That's just under 5% of the population. Do you think those people can take your advice and just put in more effort? What about the people who score just above that threshold? Do you think they could do your job only if they had better teachers? I don't think they could.
We all have natural limitations - it's much better to recognise that some people's limitations are holding them back so much that they can't function normally in modern society. That seems healthier to me than pretending that people just need to apply themselves more.
People with IQ below 75 can be classified as having a mental disability. That's just under 5% of the population. Do you think those people can take your advice and just put in more effort? What about the people who score just above that threshold? Do you think they could do your job only if they had better teachers? I don't think they could.
We all have natural limitations - it's much better to recognise that some people's limitations are holding them back so much that they can't function normally in modern society. That seems healthier to me than pretending that people just need to apply themselves more.