How do we know Uncertainty Principle is valid for macroscopic objects?

Question

The statement "Uncertainty principle is valid for macroscopic objects" is (empirically) unfalsifiable: no macroscopic measurement is going to detect.

Yet, the majority of scientists insist that UP is valid at macroscopic level...

Answer 1

I agree with the general premise of your argument; it is unprovable by today's standards. However, saying "empirically unfalsifiable" is false in my opinion. This is because with the development of more sophisticated technology, the accuracy of the instruments would increase. Eventually, we could have advanced enough technology to measure these differences, so it's difficult to generalise like this.

Additionally, scientists insist on this because theoretically it is true, and so there is no reason to doubt such a statement.

Answer 2

The uncertainty principle at the quantum level

In its most basic form, the uncertainty principle states that you cannot simultaneously determine the position and momentum of a particle with arbitrarily high precision.

You state:

The statement "Uncertainty principle is valid for macroscopic objects" is (empirically) unfalsifiable:

Because it is the algebraic results from the definition above applied to a macroscopic object,

Take any object larger than the dimensions commensurate to h_bar.

The position and momentum of any imaginable moving car will be represented by its center of mass point, and if you go to the trouble to measure them you will see that the instrumental errors are huge with respect to the quantum mechanical uncertainty of delta(x)delta(p).

The HUP is a principle , principles are extra axioms imposed on theories, this to the quantum mechanics theory, to connect observations and measurements and have good predictions. After the theory of quantum mechanics became the mainstream one, the HUP can be derived from the theory as it is now.

So what is there to falsify?