I suggest they might want to filter based on IQ but the math doesn't support them. Pick a cut-off point, below which you will not hire a person. Assume perfect filtering and no mistakes. How big can your company get?
Start with 7 billion humans, then reduce to the set of those with at least the target IQ. Are there enough people in the world to make this work? How about after subtracting people who don't do that kind of work or don't speak the right languages? Or they're in the wrong country and won't move. Or they're at some other employer. Keep subtracting from the pool and see who's left.
If your company is bigger than the number you get after this filtering, then you aren't really filtering that way. You just think you are.
Start with 7 billion humans, then reduce to the set of those with at least the target IQ. Are there enough people in the world to make this work? How about after subtracting people who don't do that kind of work or don't speak the right languages? Or they're in the wrong country and won't move. Or they're at some other employer. Keep subtracting from the pool and see who's left.
If your company is bigger than the number you get after this filtering, then you aren't really filtering that way. You just think you are.