Hawking's book "The Universe in the Shell" mentions the uncertainty principle-we can't accurately measure the position and velocity of an atom at the same time.

This is Heisenberg's uncertainty principle, which plays an important role in quantum mechanics. Its correct expression should be:

Some physical quantities of microscopic particles (such as position and momentum, or azimuth and moment of momentum, as well as time and energy, etc. ) cannot have definite values at the same time. The more certain one quantity is, the greater the uncertainty of the other quantity is. The product of measuring the errors (standard deviation) of a pair of yokes must be greater than the constant h/4π(h is Planck constant), which was first proposed by Heisenberg in 1927. It reflects the basic law of microscopic particle motion-the probability amplitude function (wave function) with the yoke as the independent variable constitutes the Fourier transform pair; The basic relation of quantum mechanics (E=h/2π*ω, p=h/2π*k) is another important principle in physics.

After careful understanding, it is not difficult to find that it is not that we are uncertain, but that it is uncertain and even more uncertain.

So I don't quite agree with you that the future is fixed.

Of course, you said that the problem you discussed could be raised to a philosophical problem. Many things are fixed, including our future and our efforts for the future. Even my answer to your question now is fixed. This possibility exists. Many times we don't have to care about the future, as long as we don't lose heart and focus on what we are doing now.