The crux seems to be who belongs in this "genius" club or should we eliminate the "genius" club altogether because it creates animosity. A very similar debate

The crux seems to be who belongs in this "genius" club or should we eliminate the "genius" club altogether because it creates animosity. A very similar debate can be in sports. Should we have a single league or a tiered league? I've seen siblings with very different performance and outcome from the young age. Obviously they are both genetically close and were raised by the same parents. There are certainly differences in people but the reason might not always be some "genius" gene. It could be very circumstantial. For example they were grouped with people who happened to do poorly in whatever was being measured so they were always the top of their group (academically or athletically) in their formative years. That provided them with a lot of self confidence throughout childhood which led them to believe they can achieve anything and always spent countless hours making sure that's true unlike their sibling who never developed the self esteem and settled for less all their lives. Maybe they didn't get too stressed when faced with challenges due to genetic or childhood differences. So IMO there should be separate leagues (just like sports teams) but also some mobility across these clubs in case someone possesses the skills and has the motivation to compete at the higher level.