This is another great question. It's still a matter of debate how the wave-like behavior of quantum mechanics turns into the particle-like behavior of large objects that we observe. Some people believe there should be a maximum size, some people believe that there isn't. In fact Nature did a survey a few months ago and found that physicists disagree wildly on this topic. https://www.nature.com/articles/d41586-025-02342-y
Have you heard of Schrodinger's cat, which is hypothetically dead and alive at the same time? Schrodinger described this thought experiment to argue that quantum mechanics led to absurdities if you took it too far. Ironically, many physicists now believe that such an experiment is possible in principle, though it would be extremely difficult.
Have you heard of Schrodinger's cat, which is hypothetically dead and alive at the same time? Schrodinger described this thought experiment to argue that quantum mechanics led to absurdities if you took it too far. Ironically, many physicists now believe that such an experiment is possible in principle, though it would be extremely difficult.