Someone who is personable or eager or hardworking (or the opposite) is as much so because of the cards they are dealt by nature or their upbringing as a person

Someone who is personable or eager or hardworking (or the opposite) is as much so because of the cards they are dealt by nature or their upbringing as a person who is intelligent (or the opposite). When you get down to it, everyone is exclusively a product of their genes and the environment, and they are in control of neither. A just society judges and rewards people based on what they contribute. Racism, sexism, ageism, and the like are unfair not because they select based on something "outside your control", but because they deprive a person of the opportunity to succeed or fail based on merit. Intelligence is a direct factor (though not the only factor) in a person's success at performing just about any job. If it is not a fair criteria by which to judge, then there are no fair criteria.