I’m going to respond so hopefully you grow.
Productivity is difficult to measure or define. Intelligence is similar. Regardless, neither of these things define value in a human life. Some people love to cook, some are great at reading comic books. One might be really good at watching TV. In the end, your preference for what is seen as valuable comes to your preference. There’s nothing objective about it. More concretely, in many engineering jobs great engineers are promoted into management positions for which they are ill suited. They make more money, are they not definitionally more productive? Yet the company and team is worse off.
As for your question, Rand is not subtle about her thoughts.
I do not. Rand explicitly does.