even if there were some yet undiscovered particles or forces, they wouldn't have any effect whatsoever on the world around us. This we can say with certainty.
Would you also assert that radio waves have no effect whatsoever on the world around us?
Would you also assert that radio waves have no effect whatsoever on the world around us?
However, their existence was undetected 150 years ago. Similarly, there are likely things that are undetected by us that also will become very important once they are discovered.