Let’s say the quantum uncertainty which is currently quite small and doesn’t affect our life on macroscopic scale suddenly increased. Magically we are still living in this weird rule of physics. How would we see daily stuff? like how would I see a ball rolling in my sight?
A good way of exposing this idea to people is showing them the step by step of how to get the particle in the box energy equation and then generalizing it for 3d.
It becomes really obvious the issues that happen when you have degenerate states.