That’s argumentum ad absurdum though. There may well be people that are useless in a given profession, my point was not about that. My point was that 10x occurr

That’s argumentum ad absurdum though. There may well be people that are useless in a given profession, my point was not about that. My point was that 10x occurrence should be analysed within specific project, work division within the team, etc. For most 10x programmers in a project it does not guarantee repetition of 10x on a different type of project or problems. Matching problem with a team member and ensuring he has a chance to become 10x at it is something that good managers do.