Truths, observations and illusions: a quantum mechanics perspective

Abstract

When I assert that I was in Cambridge on (entirety of) October 4, 2023, we tend to think this assertion has to be either true or false. But in practice, our observations cannot capture the instant moment, and records tend to average over a certain time duration. This means that even though I was actually in a quantum superposition of being in Paris and in London on October 4, 2023, in case the observable average turns out to be the state of being in Cambridge, I would be observed to be in Cambridge despite not actually being situated there. In fact, it becomes unclear whether quantum states or observations be considered the actual reality, creating an internal crisis within a correspondence theory of truth that relies on existence of absolute and objective facts.